Mainlines
n. 主线；静脉注射\\nvt. 把海洛因等毒品直接注入静脉\\nvi. 沉溺于；注入\\na. 主流的；沿干线的；传统的
🗣️ 情景例句
Do you think the clothing industry has bright future?
你觉得服装行业前景好吗？
He who does not advance falls backward.
不进则退。
However, a new type of humour, which stems largely from the U.S.,has recently come into fashion.
然而，近来一种新式幽默流行了起来，这种幽默主要来自美国。