Hollow cathode
[電] 空心陰極
?? 詞語組成解析
hollow
['hɑlo]
adj. 空的;空洞的;虛偽的;空腹的;
n. 洞，坑;山谷;
vt.& vi. 挖空（某物），變空;挖出（孔、洞）;
adv. 完全，徹底;
cathode
[['k?θ?ud]]
n. 陰極\\n[化] 陰極
??? 情景例句
Don't judge people by their income level.
不要憑人的收入判斷人。
What were you doing this time last year?
去年這時(shí)候你在干什么？
You must be very popular .
你一定很受歡迎。