We see him snorting and mainlining cocaine.

我们看到他吸食并注射可卡因。

《柯林斯英汉双解大词典》

Instead of mainlining sugar, reach for some long-term energy snacks.

来点能够长期补充能量的小吃来取代甜食吧。

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The state, which has some responsibility for moulding minors, should try to ensure that its small citizens aren't mainlining sugar at primary school.

国家有责任塑造未成年人，它应该设法保证其小公民们不在小学里狂吃糖。

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Since he was an unusually small lad, he had been mainlining Greek and Roman poetry.

由于还是非常年轻的孩子，他依旧沉湎于希腊和罗马的诗歌。

耶鲁公开课 - 弥尔顿课程节选

It's like mainlining youth, I cried.

NPR: The iPod, an Electronic Fountain of Youth