Periodic asthenia
[醫] 周期性衰弱
?? 詞語組成解析
periodic
[,p?r?'ɑd?k]
adj. 周期的;定期的;回歸的;間歇的，時而發生的;
n. 衰弱\\n[醫] 無力, 虛弱, 衰弱
??? 情景例句
Why is that necessary?
為什么有此必要
He must needs swim that is held up by the chin.
身不由己，只得從命。
I have something to tell you.
我有事要告訴你。