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
But please call first.
不过，请你先打电话。
It is not good to wake a sleeping lion.
睡狮莫惊。
He could not wash himself or get dressed.Instead, his sister or his parents had to help him.
他自己不能洗澡或穿衣服，他的姐姐或父母亲就只好帮他的忙。