Packed bed
[化] 填充层
🧩 词语组成解析
packed
[pækt]
adj. 充满…的;塞满了…的;
v. 包装(pack的过去式和过去分词);
bed
[bɛd]
n. 床;苗圃;河床;（地下由黏土、岩石等构成的）地层;
vt. 把…固定在;（某人）发生性关系;给人铺床;
vi. 上床;分层;
🗣️ 情景例句
and my math teacher's going to miss her.
而我的数学老师也会想念她。
Laugh before breakfast you'll cry before supper.
乐极生悲。
Oh, hi, Jim! What are you going to do next week?
噢，你好，吉姆！你打算下星期做什么？