Graptolites
(graptolite 的复数) n.[古生]笔石( 古元脊椎动物, 现存化石 )
🗣️ 情景例句
Are you being waited on?
您需要服务吗？
What makes life dreary is the want of motive.
没有目的，人生就黯淡无光。
How are you getting on with your English lessons?
你的英语课学得怎么样了？