When to Define a Term 第二节 ; 定义的时机
When to raise a question 提问的时间
When to see a doctor 什么时候需要去看医生
When to use a flash 什么时候用闪光灯
Norman's family urged him to continue his studies at a time when many farm boys left school to find a job.
VOA: special.2009.11.10
This decision is also hard to make because when you are a backend technology provider, it's like selling a piece of commodity.
之所以这是一个困难的决定还因为,当作为后台技术提供商时,就像出售一件商品似的。
and your boss comes to you with a very large project when you already have much work to do.
你的老板找到你,希望你参与一个大型项目,而你自己的工作已经快忙不过来了。
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