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
Which tourist attractions are the best?
哪一个旅游景点最好？
I would like to go to town, Do you want to go, too?
我要去城里，你是不是也要去？
You must be more careful! That car nearly hit you.
你得多加小心！那辆小车差一点碰着你了。