Graptolite
n. [古生]笔石( 古元脊椎动物, 现存化石 )
🗣️ 情景例句
Don't worry, Alexandra.
别担心，Alexandra。
I have no leisure time to play golf.
我没空闲打高尔夫球。
We can offer you this in different levels of quality.
这产品我们有三种不同等级的品质。