Black's reagent
[醫] 布萊克氏試劑(氯化鐵5克和氯化亞鐵0.4克溶于100毫升水中)
?? 詞語組成解析
reagent
[ri(:)'eid??nt]
n. 反應物，試劑;
??? 情景例句
How soon will my mail be received by the other end?
我的信件多快能被對方收到？
No,he doesn't have one.
不，他沒有。
she has to help with the washing.
她得幫忙洗衣服。