Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
but there must be a way
但总该有一个办法
You'll know our products better after this visit.
参观后您会对我们的产品有更深的了解。
It's nothing serious. I think you've been very fortunate. Have you ever used the hot-cloth-and-frozen-peas treatment?
不要紧。我认为你非常幸运了。你用过热布---冻豌豆疗法吗？