She had put her watch in her pocket for safe keeping.

为安全起见，她把手表放进了衣袋。

《牛津词典》

We put the document into the bank for safe keeping.

我们将文件存入银行，以便将其妥为保管。

youdao

Before the game I gave my watch to my wife for safe keeping.

我在比赛前把手表交给妻子保管。

youdao

Fourth, there's generally some arrangement, either for the publication of the treaty, or its deposition, its safe-keeping in some sort of shrine.

第四是一些笼统的安排，对条约的公布，或者废除，然后放在圣坛里，安全保管。

耶鲁公开课 - 旧约导论课程节选

Some had been stolen by the Nazis, the rest left by the Nazis' victims for safe keeping.

ECONOMIST: Switzerland off the hook

The artefacts had been placed in the museum's storage facility in Swords for safe keeping when the thieves struck.

BBC: Europe

Stewart knew to toss Marshall's first strikeout ball to Girardi for safe keeping.

WSJ: Hughes roughed up by Ibanez, Mariners