Physical layer
[计] 物理层
🧩 词语组成解析
layer
['leiə]
n. 层，层次;膜;[植]压条;放置者，计划者;
vt. 把…分层堆放;借助压条法;生根繁殖;将（头发）剪成不同层次;
vi. 形成或分成层次;[植]通过压条法而生根;
🗣️ 情景例句
He came down with the flu, so he didn't go to work.
他感冒了，所以没去上班。
It's nothing serious; just some routine examination (checkups).
这并不是什么了不起的事，只不过是常规检查而已。
But animals of this age do not easily become subservient to man,
但这个年龄的象不易驯服，