Parents can't be expected to watch their children 24 hours a day.

不能指望父母全天24小时都照看自己的孩子。

《柯林斯英汉双解大词典》

I watch their smiling.

我看着她们的微笑

youdao

A large number of people watch their competitions online, and successful gamers can get more than 1,000,000 dollars from prize money and ads.

很多人在网上观看他们的比赛，成功的游戏玩家可以从奖金和广告中获得超过100万美元。

youdao

This lets them watch their movement by satellite and identify the areas where sea creatures gather.

VOA: special.2009.01.13

And they can watch to see what happens in terms of their interaction with the environment.

观察发生了什么,关于这些物质,和环境的互动。

麻省理工公开课 - 媒体、教育、市场课程节选

even at gunpoint for their watch or their wallet, cell phone, belongings like that.

甚至是被枪指着劫持，要他们的手表、钱包、手机等类似的财物。

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They probably played one game not to lose, only to watch their lead slip away.

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Dr Reid was trying to tell Muslim parents they needed to watch their children more closely.

BBC

AcerCloud enables users to listen to all their music, and watch their videos anytime and anywhere.

ENGADGET: AcerCloud blows into Europe, bringing remote access to your (Acer) laptop