保

我们要保家卫国，维护自己国家的安全。

We must defend our homeland and protect our country's security.

这个杯子不保温，水放在里面一会儿就凉了。

This cup doesn't retain heat well; the water cools down after a short while.

他为了买房向银行贷款，需要找两个有稳定工作的人作保。

He needs a bank loan to buy a home and must find two people with stable jobs to act as guarantors.

老李为人正直，村里人借钱时都愿意请他作保。

Lao Li is an upright person, so people in the village often ask him to act as a guarantor when they borrow money.