Crystal speaker
[電] 晶體揚聲器
?? 詞語組成解析
speaker
['spik?]
n. 說話者;演講者，發言人;講某種語言的人;揚聲器;
??? 情景例句
... and I do need some advice on a difficult problem.
……我的確有一個難題要請教你。
Let's cross the bridge when we come to it.
既來之，則安之。
It's quite likely that a decision will be made before the end of the year.
有可能年底前就要作出決定。