diagnosis
诊断

例句：
Joan's fever led to a diagnosis of pneumonia.
对琼发烧的诊断是她得了肺炎。


in bulk
成批的，大量地

例句：
You should think twice before you decide to buy them in bulk.
在你决定成批购买这些货物之前，你应该三思而行。


Take your time.
慢慢来。

对话：
A: What can I do for you, sir?
B: No, thanks. I'm just browsing.
A: That's all right. Take your time and look around, please.

A：您要些什么，先生？
B：不，谢谢。我只是随便看看。
A：没关系。请慢慢看吧。