Femtogram
毫微微克(10的-15次方克)
🗣️ 情景例句
Tongue muscles'training is of great importance in learning any foreigh language.
口腔肌肉训练在学习任何语言时都是非常重要的。
Forgive me for interrupting, but I have a question.
对不起我插个嘴，我有一个问题。
It is only someone looking on from outside that can inject the dangerous thoughts.
只有外部的旁观者才能灌输危险的思想。