D-layer
n. D层（电离层的最下层）
🧩 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 looked up at me.
他仰头看我。
Dog does not eat dog.
物不伤其类。
Debbie Hart is going to swim across the English Channel tomorrow.
黛比。哈特准备明天横渡英吉利海峡。