Half-wavelength
半波長
?? 詞語組成解析
half
[h?f]
adj. 一半的，半個的;
n. 半;一半;（啤酒等飲料的）半品脫;（比賽、音樂會等的）半場;
adv. 一半;部份地;
??? 情景例句
Where's your grandson Robbie and his friend Alexandra?
你的孫子Robbie和他的朋友Alexandra呢？
Here's no necessary.
我看沒這必要。
they do not realize that they are deprived of the necessities of life.
卻沒有意識到被剝奪了生活所必需的東西。