She was holding onto the rail to keep her balance.

她抓着栏杆来保持身体平衡。

《柯林斯英汉双解大词典》

But new messages just keep piling onto old ones like a game of Tetris you're about to lose.

但新的消息就像俄罗斯方块一样一直堆积到旧的上面，直到你不得不去搞定他。

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To keep control of the backed up data, why not burn all the photos and videos onto a DVD?

要对备份数据进行控制，为什么不丢掉一个DVD上的所有照片和录像呢？

youdao

By determining how many of those molecules to hold onto, how many to keep in the body, how many to release determines the internal composition with regard to that ion.

通过控制体内这些分子的水平,即体内保有多少,又排出多少,就能够保证内环境中离子组成的稳定

耶鲁公开课 - 生物医学工程探索课程节选

Keep grabbing onto opportunities with quiet assurance and integrity and you will shine!

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It is, but the amount of work pales to almost insignificance when compared to the alternative: rushing around like the Wicked Witch of the East, scattering signals to the wind, and wondering why houses keep dropping onto our heads.

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It wasn't a great move, but you give him credit ... just to hold onto it and keep it and put it in the net.

WSJ: Miller's SO goal lifts Rangers over Hurricanes