JOIN IN在劍橋英語詞典中的解釋及翻譯 - Cambridge Dictionary

1a and 2a are the only ones that sound correct to me. to join-in means to take part in or to beco...

When did they join the conservation organization？他們是什麼時候參加環保組織的？ The auther joined the Internatio...

join in的意思、解釋及翻譯：to become involved in an activity with other people: 。了解更多。

I know when we should say 'join somebody'. Then how about activities or organizations? Are the bo...

There really is no difference in meaning. I usually don't use "join in" with an object: I will jo...