opt in
決定參加 (某活動、計畫等)；決定加入 (某組織、團體成為會員)
If you want them to notify you of updates, you have to opt in.
opt into +
決定參加某活動、計畫等；決定加 入某組織、團體成為會員
I opted into the scheme.
pal up
成為好友
We palled up when I started working with her.
part with +
捨棄；割捨
I found it very hard to part with my old CDs when I digitized my collection.
pass * back +
發回
I felt awful when the teacher started to pass back the exam papers.
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