用英语解释：1.在中间2.走路去3.尽快给我回信

①in between在中间 扩展：between the … and …
②walk to 走路去 扩展：to表目的 on foot是走路
③write soon 尽快给我回信 扩展:write soon =write back soon

in the middle of
walk back
answer me as soon as possible

1in the center
2on foot
3write back soon

1. in the middle
in the middle of XX , 在 XX 的中间
2. walk to
go to XX on foot
3. reply as soon as possible