lack

a black list

黑名单

a black sheep

败家子, 败类, 害群之马

a city in blackout disguise

实行灯火管制的城市

a lack of

缺乏，缺少

aceko-black

[机] 醋黑

acetylene black

[化] 乙炔黑

acid alizarine black

[机] 酸性茜素黑

acid alizarine blue-black

[建] 酸性茜素蓝黑

acid black

[机] 酸性黑

Acid Black 10B

[化] 酸性黑10B

acid black 2r

[建] 酸性黑2R, 二蓝光酸性黑

acid blue black 6b

[建] 酸性蓝黑6B, 酸性蓝黑

acid chrome black

[机] 酸性铬黑

Acid Chrome Black T

[化] 酸性媒介黑T

acid milling black b

[建] 酸性磨黑B, 蓝光酸性黑

active anthracene black

[化] 活性蒽炭黑; 活性蒽炭黑补强剂

active low structure black

[化] 活性低结构炭黑

adoption of black market babies

[法] 黑市婴儿的收养

agalma black

[机] 寿山黑, 阿加马黑

alack

int. 表示“忧伤”之义, 呜呼