1.

Follow（often used when referring to social media）
關(guān)注(常用于社交媒體)

2.

Enroll (frequently used when someone joins a class)
注冊(cè)(經(jīng)常在某人加入一個(gè)班級(jí)時(shí)使用)

3.

Enlist (used when joining the military)
登記(參軍時(shí)使用)

4.

Take part in(something) (refers to joining some activity or event)
參加某事(指參加某項(xiàng)活動(dòng)或事件)

5.

Team up with (join a person or group in order to work together)
與(某人或某團(tuán)體)合作

6.

Associate with (loosely joining with others in order to work together)
與…交往(為了一起工作而松散地與別人交往)

7.

Come aboard (commonly used when one joins an organization or business)
加入(加入組織或公司時(shí)常用)

8.

To network (when people try to meet others in order to join or associate with them in the future)
社交(當(dāng)人們?yōu)榱嗽趯砑尤牖蚺c他人交往而試圖結(jié)識(shí)他人時(shí))