Graptolite
n. [古生]笔石( 古元脊椎动物, 现存化石 )
🗣️ 情景例句
When I was asked to speak in English.
刚才当被要求说英语的时候。
I ought to write a letter.
我应该写一封信。
A lot of people object to mobile phones, especially when they are used in public places like restaurants or on public transport.
许多人都反对移动式电话，特别是在如饭店，公共交通车等公共场所使用移动电话。