拙劣

He accused the garage of shoddy workmanship on the bodywork.

他指责汽车修理厂车身修理工艺。

The poorly designed bridge needs remedial work to make it safe.

这座设计桥需要做补救工作，以确保它安全。

A poor argument halts.

论, 漏洞百出。

This is an unskilled painting.

这是幅画。