D layer
[電] D層
?? 詞語組成解析
layer
['lei?]
n. 層，層次;膜;[植]壓條;放置者，計劃者;
vt. 把…分層堆放;借助壓條法;生根繁殖;將（頭發(fā)）剪成不同層次;
vi. 形成或分成層次;[植]通過壓條法而生根;
??? 情景例句
and ask her to come by and talk about it.
請她過來談談這件事。
Why are you following me?
你為什么跟著我？
In the letter he was asked to call at the station.
要他到警察局去一趟。