Effective radium content
[医] 有效镭含量
🧩 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
I would hardly refer to junk mail as being literature.
我不会把那些垃圾邮件看成是文学。
This is to be my treat, so I'll pay for everything.
这次轮到我作东，所以一切由我付账。
It doesn't matter this time.
不要紧。请进来坐下吧。