give a guarantee of good behavior

保证行为检点

Wealth is no guarantee of happiness.

财富并非幸福的保证。

They offer a two-year guarantee on all their electrical goods.

他们所有的电器商品都有两年的保修期。

This iron is guaranteed against failure for two years.

这个熨斗保修两年。

Finding the right spot to camp is the first step to guaranteeing a good night's sleep.

找到合适的野营地是确保晚上休息好的第一步。

If you have the watch cleaned here, we can guarantee it for an additional three months.

如果你在这里清洗手表，我们可以额外保修三个月。