I drove to the postbox and posted the key. I then discovered that the motel key won't start my car.

等我再想开车回家的时候，我发现我手里面拿着的是旅馆的钥匙。

youdao

In the second half we entered onto the field convinced but then discovered that we had conceded the third goal.

下半场我们带着决心踏上球场，但很快发现我们丢了第三个球。

youdao

The team then discovered that a gene alteration stopped a sensory cell on the bugs' antennae from detecting the chemical.

该小组随后发现了一个基因的改变，这一改变阻断了触角上探测这种物质的细胞之间的传感。

youdao

Then she discovered a set of old drums in her family's home and became interested in playing that instrument.

VOA: special.2009.10.02

And he actually did this in the late 1800's, back before even all of the elements that we know today were discovered, really only about 60% or so, 70% were discovered then that we now know today.

他最终在十九世纪晚期完成了这一壮举，难能可贵的是,虽然我们现在已经发现了所有的元素，但在当时已知的元素只有我们现在知道,百分之六七十，在这种情况下。

麻省理工公开课 - 化学原理课程节选

Are we saying that until 1774 there was no oxygen because it was discovered then?

我们是说，直到1774年才出现的氧,是因为它被发现了？

麻省理工公开课 - 固态化学导论课程节选

Israel and America then discovered that nobody had the authority to talk peace in Mr Arafat's stead.

ECONOMIST: The Palestinians' new leader

He thought he had a job lined up, but then discovered that the offer had vanished in the 2008 recession.

FORBES: Why the New Generation Needs the Old Self-Help Classics

The scientists then discovered that in leukaemic cells, Tenovin is able to interfere with the process of "self-digestion" that leukaemic cells use to protect themselves during periods of stress.

BBC: University of Dundee uncovers new way to treat leukaemia