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
Did you enjoy yourself last weekend?
上周末你过得开心么？
No, it isn't. It's a bus.
不，那是一辆公共汽车。
What are you going to do this evening. Jill?
今晚你打算干什么，吉尔？