Ceanothine
[化] 美洲茶碱
🗣️ 情景例句
It's easy to pick something for my colleagues, but it's difficult for my boss.
给同事们的应该不难买，但是给老板的就难罗。
Never too old (or late) to learn.
学到老，学不了。
we are now pretty certain the Earth is the only one on which life can survive.
我们目前可以肯定的是，地球是生命能存在的唯一行星。