Effective concentration
[化] 有效浓度
🧩 词语组成解析
effective
[ɪ'fɛktɪv]
adj. 有效的;起作用的;实际的，实在的;给人深刻印象;
n. [军]现役兵额，有生力量，精兵;
ef出+fect做，制作 +ive形容词后缀 →做出来的 → 有效的
🗣️ 情景例句
And let's not forget our cassette player and some tapes.
还别忘了带上我们的卡式录音机和一些录音带。
Steele took charge of all arrangements.
斯蒂尔负责一切准备工作。
Though they extol the virtues of the peaceful life, only one of hem has ever gone to live in the country and he was back in town within six months.
尽管他们都交口称赞宁静的乡村生活的种种优点，但其中只有一个人真去农村住过，而且不足6个月就回来了。