A particular idea might seem appealing until you suddenly come up with an objection to it; but then you might almost as quickly think of a way to respond to the objection.

但是一旦你想到反对的意见，你又会很快地想到回应这个反对意见的意见。

youdao

You wander off to one side, into the nave, and suddenly you come across this spectacular altar, or a beautiful painting that was totally unexpected.

你走到一头，进入中殿，突然你看到了壮观的祭坛，或者一幅绝美的画卷，类似这样的完全意想不到的东西。

youdao

What do you do when you happily surf the web and suddenly come across a 404 error?

当你愉快地上网，突然碰到404错误，你会怎么做呢？

youdao

You come upon the canyon suddenly, when you reach its edge.

VOA: special.2009.10.07

Their ships, their boats were not very seaworthy; storms come up in the Mediterranean very suddenly and terribly; you take your life in your hands when you travel.

他们航海的工具,船只,还非常脆弱,地中海可怕的风暴神出鬼没,当时出海就意味着,你把自己交给命运处置

耶鲁公开课 - 古希腊历史简介课程节选

You know, you're out of the World Cup and the next morning you come to learn that your coach has suddenly died.

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"They had been engaged in the process from 18 months to two years of discussion with government and management and now, suddenly, they present memoranda and say you have got 14 days to come to an agreement with our demands otherwise we are going to go out on strike, " Ian Phillips, a special adviser to Public Enterprises Minister Jeff Radebe, told the BBC's World Business Report.

BBC: South African unions claim strike success