Thalassogeosyncline
深海地槽
??? 情景例句
It's nice to meet you.
很高興見到你。
I asked him to clean it for me, but he wouldn't.
我請他幫我清理，但是他不肯。
In the contrary school, the duck is supreme.
與滑翔鳥相對的另一類鳥中，數野鴨本領最高。