Hydrogens
(hydrogen 的复数) n. 氢\\n[化] 氢H-2
🗣️ 情景例句
That's understandable.
那是可以理解的。
I've arranged my class schedule so I'll have my afternoons free.
我调整了我的课程表，以便下午腾出空来。
With practice, no doubt, I could in time learn to write by holding the pen still while the paper moved.
毫无疑问，经过练习，我最终能够学会笔不动而纸动来写字。