Femtogram
毫微微克(10的-15次方克)
🗣️ 情景例句
Bye, Dad.
再见， 爸爸。
Wit without learning is like a tree without fruit.
仅有机智而无真才实学，犹如一棵大树不结果。
Let's have a beer or something.
咱们喝点啤酒什么的。