Femtogram
毫微微克(10的-15次方克)
🗣️ 情景例句
Mom says we can give her a going-away surprise party.
妈妈说我们可以给她举行一个让她惊喜的欢送派对。
Why are you so much taller than I?
你为什么个子比我高那么多？
Goodbye!
再见！