1.acknowledgment n. 承认, 承认书, 感谢

I didn't receive an acknowledgement of my application.
对我的申请, 我还没有收到回信。

2.gravel n. 碎石 v. 铺碎石, 使困惑

We bumped up and down along the gravel path.
我们沿砾石小路颠簸而行。

3.fix[fiks] vt. &vi. 使...固定,修理,准备

She's got herself fixed up with a cosy flat.
她弄到了一套舒适的公寓。