I should join in more activities.
我应该参加更多活动。
I want to join in their adventures.
我想要加入他们的'冒险。
Join in a group with different values.
加入一个有不同价值观的团体。
Should South Africa join in this group?
南非该加入这一集团吗?
Which club will the woman probably join in?
这位女士可能会参加哪个俱乐部?