Train-sets
(train-set 的复数) 模型铁路（玩具）；成套火车
🧩 词语组成解析
n. 集合, 设置（set的复数）
🗣️ 情景例句
The smog in L.A. is caused by air pollution and water vapor.
洛杉矶的烟雾是由空气污染和水蒸气造成的。
A man has his hour, and a dog has his day.
人有称心时，狗有得意日。
There are eighteen floors in the building, and he lives on the fifteenth floor.
这幢大楼有18层。他住在第15层。