Active section
[化] 有效截面; 活动截面
🧩 词语组成解析
active
['æktiv]
adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的;
n. [语法]主动语态;积极分子，活跃的人;
section
['sɛkʃən]
n. 部分;节;部件;部门;
vi. 切开;切断;做（动物或植物组织）切片;把（精神病患者）正式送入精神病院;
vt. 把…切成片（或段）;作…的切片;把…作成截面;制作…的剖面图;
sect切， 割+ion名词后缀 → 切开；部门
🗣️ 情景例句
going to the children's ward once or twice a week
每星期就去小儿科病房一、两次
Won't you buy me a newspaper on your way home?
回家的时候，替我买份报纸好不好？
He loved to be told that one of his imaginary products was temporarily out of stock and he would faithfully promise to call again at some future date, but of course he never did.
他爱听售货员说他想像出来的那种东西暂时脱销，于是他就煞有介事地许诺改天再来光顾。当然，他再也不会来了。