这家餐厅的服务就像一台润滑良好的机器，一切运转得非常顺畅。

The service in this restaurant runs like a ___well-oiled machine, everything operates very smoothly.

派对结束后，他喝得醉醺醺的，连钥匙都插不进锁眼了。

After the party, he was so ___well-oiled that he couldn't even fit the key into the lock.