他们两个都微笑着朝朋友们点了点头。

Both of them smiled and nodded at friends.

《柯林斯英汉双解大词典》

你们两个都抓着我的尾巴，我带着你们。

Hang onto my tail, both of you, and let me lead you.

youdao

这两个我都喜欢，而且事实上我必须同时做这两件事，以防我疯掉。

I like doing both and in fact I need to do both at the same time to keep me from going crazy.

youdao

Both firms are producing quantities; both firms are trying to maximize profit, and I want to find out the Nash Equilibrium.

两个公司都生产商品,都希望最大化利润,而我也想找出纳什均衡

耶鲁公开课 - 博弈论课程节选

If you want to make sure both conditions are true and they both have to be true for any code to be executed, use ampersand ampersand.

如果你想保证两个条件都成立,或者它们两个都必须为真值，才能执行一些代码，那就使用“&&“

哈佛公开课 - 计算机科学课程节选

These other two, primaries and higher dimensions, they're both great points.

另外两个约束条件,初选和多维度,这二者都是很有现实意义的

耶鲁公开课 - 博弈论课程节选