piece

Cut off a piece of wood 5 cm in length.

截下一段五厘米长的木头。

His trousers were held up with a piece of string.

他的裤子靠一根细绳系着。

Would you like a small or a large piece?

你想要一小块还是一大块？

Chop the potato into bite-sized pieces.

把马铃薯切成小块。