on the hop：到处奔波，忙碌地
e.g. She was kept on the hop during our excursion.
在我们的旅行期间，她显得很活跃。
e.g. The young man was keeping on the hop for four hours while his wife is having the baby.
他妻子生孩子时，这小伙子一连忙碌了四个小时。
