Wrap all of the wire onto the iron nail leaving about 10 cm of both ends of the wire exposed.

把所有的铜丝缠绕在铁钉上，两端各甩出10公分长的富余。

youdao

Wrap all of the wire onto the iron nail leaving about 10 cm of both ends of the wire exposed.

把所有的铜丝缠绕在铁钉上，两端各甩出10公分长的富余。

youdao