最佳答案：besind是位置，方向介词。Suddenly , they heard a voice behindthem .突然他们听到身后的声音。Say it to his face , not behind
besind是位置，方向介词。
Suddenly , they heard a voice behindthem .突然他们听到身后的声音。
Say it to his face , not behind his back ..当面直言，不要背地嘀咕。
His arms were tied together behind his back .他的胳臂被反绑在背后。
We must not run a newspaper behindclosed doors .我们不能关门办报。
Oh dear ! the travelling bag has been left behind .旅行袋忘了拿了。
