density
n
1 [U] quality of being dense(1b, 2) 浓度; 密度
the density of a forest, the fog, etc 森林的密度、 雾的浓度.
2 [C, U] (physics 物) relation of mass to volume 密度(质量与体积的关系).
Where are you staying in Guangzhou? I hear that the hotels there are very expensive.
在广州你打算住在哪儿?我听说那里的旅馆收费很高。
Of course he is. He's very successful. He's made lots of records. They broadcast a programme of his music last month on the radio. Why don't you come on Saturday? I think you'd enjoy it.