The small pits that form on the surface act as stress raisers.

形成的小凹坑起到应力增高源的作用。

youdao

All you remember about your child being ten is managing the school fund raisers.

孩子10岁时，你所记得的，是怎么组织学校的募捐者。

youdao

All you remember about your child being ten is managing the school fund raisers.

孩子10岁时，你所记得的，是怎么组织学校的募捐者。

youdao