鱼饵上面有一个小钩子。

Yú'ě shàngmiàn yǒu yī gè xiǎo gōuzi.

There's a small hook on the fish bait.

他用钩子把箱子拉了上来。

Tā yòng gōuzi bǎ xiāngzi lāle shànglái.

He used a hook to pull the box up.

小偷使用绳子和钩子爬上了楼。

Xiǎotōu shǐyòng shéngzi hé gōuzi pá shàngle lóu.

The thief used a rope and hook to climb up the building.