Rhachidian
[醫] 脊柱的
??? 情景例句
I don't know haw that could have happened.
我不知道怎么會發生那樣的事。
She is now on vacation.
她正在休假。
Arthur C.Clark once suggested a revolutionary idea passes through three phases:
Arthur C.Clark曾經提出，一個革命性的想法經過三個階段：