Bed density
[化] 床层密度
🧩 词语组成解析
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
Oh, that's not too far from here!
噢， 那儿不很远。
He that knows not how to hold his tongue knows not how to talk.
不知缄口的不善言。
Hardly anyone can positively enjoy sitting in a train for more than a few hours.
很少有人能够真正喜欢坐几个小时以上的火车。