Teenagers need 8-10 hours of sleep a day because they need lots of energy to grow into their adult bodies.

青少年每天需要8-10个小时的睡眠，因为他们需要大量能量来长成成年人的身体。

youdao

I need lots of energy. walk to sw.

我需要大量的能量。步行去某处。

youdao

Here I brought you some breakfast, you'll need lots of energy today.

我带了早餐给你，你今天需要很多热量。

youdao

Then along came cell phones which need lots of electricity, relatively speaking, to power their energy-hungry radio connections.

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