Photodimerization
光二聚
??? 情景例句
I should have quit while I was ahead.
我應(yīng)該見好就收。
A fox may grow grey, but never good.
狐貍會變，但本性難移。
The comparable speed from the Moon is only 1.5 miles per second.
而從月球出發(fā)的相應(yīng)速度只是每秒1。5英里。