1. Every man has his hobbyhorse .
人各有所好。

1. 木马：hobby 业余爱好 | hobbyhorse 木马 | hobgoblin 妖怪

2. 旋转木马：Harmonica 口琴 | Hobbyhorse 旋转木马 | Hornet nest 蜂巢

3. 木马/摇马/竹马：hobby /爱好/嗜好/拿手/木马/一种小鹰/癖/ | hobbyhorse /木马/摇马/竹马/ | hobbyist /有业余爱好者/

4. 竹马：hobbyhorse 摇马 | hobbyhorse 竹马 | hobbyist 有业余爱好者

noun

1. a child's plaything consisting of an imitation horse mounted on rockers
the child straddles it and pretends to ride

Synonym: hobbyrocking horse

2. a topic to which one constantly reverts

e.g. don't get him started on his hobbyhorse