30.30
2
.
 |
 |
 |
 |
 |
 |
一二 one or two (days, etc.);
二十，二百 twenty, two hundred;
十二 twelve;
二倍 double;
不二價 one-price (sales system), 二八 [er4ba1]↓；
(in writing checks, 貳 is used to prevent mistakes, as in spelling out amount).
(2) Second: 第二 ditto;
星期二 Tuesday;
第二次 second time;
二房 [er4fang2]↓;
天下無二 not an equal in the world.
2.二把刀 [er4ba3dao1], n., (coll.) second-rate (knowledge of subject).
3.二半破子 [er4ban4po4zi0], n., see [er4ba3dao1]↑.
4.二百五 [er4bai2wu3], n.,(coll.) a stupid person.
5.二碴（兒） [er4cha2]([er0]), n., a regrowth of hair, of harvest.
6.二乘冪 [er4cheng2mi4], n., see [er4ci4fang1]↓.
7.二親 [er4qin1], n., father and mother.
8.二重唱 [er4chong2chang4], n., duet; 二重奏 duet performance on piano; 二重奏曲，二重唱曲 duet for instrument, for voice.
9.二等 [er4deng3], adj., second-class.
10.二二忽忽 [er4er4hu1hu1], adj., perplexed, undecided.
11.二房 [er4fang2], n., concubine.
12.二房東 [er4fang2dong1], n., landlady who herself rents room or house from owner.
13.二副 [er4fu4], n., second mate (navigation).
14.二乎 [er4hu0], adj., see [er4leng0]↓.
15.二花臉 [er4hua1lian3], n., (Chin. opera) number two in male role (also called 副淨, see 淨 63A.00).
16.二黃 [er4huang2], n., (Chin. opera) term for popular form of Chin. opera, said to come from 黃陂，黃岡 Huarngpir and Huarnggang, districts in Hupeh.
17.二婚兒 [er4hueer0], n., (coll.) woman who marries twice, also 二婚頭.
18.二混子 [er4hun4zi0], n., (coll. contempt.) a ne'er-do-well, who finds jobs either too high or too low for him.
19.二葷鋪 [er4hun1pu4], n., a cheap eating place.
20.二和 [er4huo4], n., second infusion, see [er4jian1]↓.
21.二胡 [er4hu2], n., a stringed instrument, slightly lower in tone than 胡琴 [hu2qin2].
22.二價 [er4jia4], phr., usu. 不二價 one-price system.
23.二煎 [er4jian1], n., second infusion of medical herbs.
24.二指 [er4zhi3], n., the index finger.
25.二老 [er4lao3], n., father and mother.
26.二來來 [er4lai2lai2], adv., all over again.
27.二藍 [er4lan2], adj., a color paler than dark blue.
28.二郎神 [er4lang2shen2], n., a popular Chin. god, good at fighting demons.
29.二愣 [er4leng0], adj., (1) stunned; (2) scared stiff.
30.二六板 [er4liu4ban3], n., (Chin. opera) name of a rhythm, marked one beat per bar.
31.二硫化 [er4liu2hua4], n., (chem.) disulfide: 二硫化碳 carbon disulfide; 二硫化鐵 iron disulfide.
32.二路腳兒 [er4lu4jUe2er0], n., (Chin. opera) secondary role.
33.二路兒 [er4lu4er0], adj., second-rate (goods).
34.二綠 [er4lU4], adj., light green.
35.二氯化汞 [er4lU4hua4gang3], n., (chem.) mercuric chloride; 二氯化錫 stannous chloride.
36.二毛 [er4mao2], n., (AC) grey-haired person: 二毛子 (Boxer Uprising) a Chin. working with missionary or white merchant ( 大毛)
37.二門（兒）（子） [er4men2] (i>ehl-mer-'l) ([zi0]), n., second gate leading to main court.
38.二面 [er4mian4], n., (dial.) see [er4hua1lian3]↑.
39.二拇指 [er4mu0zhi3], n., index finger.
40.二難 [er4nan2], n., (complim.) unusual brothers (難兄難弟)；sometimes also unique host and guest.
41.二人奪 [er4ren2duo2], n., a sword or knife encased in scabbard shaped like walking cane; sword is exposed if s.o. tries to grab it.
42.二三 [er4san1], phr., (1) two or three; (2) (AC) 二三其德 of changeable character.
43.二色 [er4se4], (1) adj., two-colored; (2) v.i., keep a mistress or commit adultery: 不二色 never know another woman.
44.二項式 [er4xiang4shi4], n., (math.) binomial equation; 二項式定理 binomial theorem.
45.二絃 [er4xian2], n., a stringed instrument, smaller than 老絃.
46.二姓 [er4xing4], n., (1) two families of different clan names united in marriage; (2) two ruling houses of different surnames.
47.二性子 [er4xing4zi0], n., a bisexual person, hermaphrodite (see [er4xing2ren2]↓).
48.二心 [er4xin1], n., disloyalty of heart.
49.二形人 [er4xing2ren2], n., hermaphrodite, a bisexual person.
50.二水兒 [er4shueeer0], n., second hand (cover, shroud, etc.) which has been rented out before.
51.二豎 [er4shu4], n., (LL) evil spirit responsible for illness (allu. two boys hiding in body).
52.二碳化 [er4tan4hua4], n., (chem.) carbide: 二碳化鈣 calcium carbide.
53.二踢腳 [er4ti1jiao3], n., a double explosion firecracker.
54.二體人 [er4ti1ren2], n., hermaphrodite, see [er4xing2ren2]↑.
55.二次方 [er4ci4fang1], n., (math.) square, the product of a number multiplied by itself.
56.二屋（兒）裡 [er4wu1]([er0])[li1], n., as in 說到二屋裡 stray off in discussion.
57.二五眼 [er4wu0yan3], n., person of dubious discrimination or judgment.
58.二氧化 [er4yang3hua4], n., (chem.) dioxide; 二氧化碳 carbon dioxide; 二氧化錳 manganese dioxide; 二氧化硫 sulphur dioxide; 二氧化氫 hydrogen dioxide.
59.二儀 [er4yi2], n., heaven and earth.
60.二元論 [er4yUan2lun4], n., dualism(phil.).
61.二月 [er4yUe4], n., Feburary.