at the back of ...

phr

• ① 在…的后面[背后](=behind)(←→in front of)(=at ...'s back)
  • I sat at the back of the classroom and couldn't hear well.我坐在教室后面,听不清楚。
  • There is something at the back of it.此事幕后有隐情[事有蹊跷]。

• ② 支持;拥护(=at ...'s back)

• ③ 在后头(跟踪某人)(=at ...'s back)