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
my sister and her husband and their daughter.
我妹妹Susan和她丈夫以及他们的女儿。
When is the most convenient time for you?
你在什么时间最方便呢？
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。