They will face another key test.

而共和党的执政将会给民主党带来另一种考验。

And NASA's also testing key systems like communication, navigation and the spacecraft's heat shield.

NASA也在测试通讯、导航和航天器隔热罩等关键系统。

And if you can't get the key tests before the session, how are you supposed to do the reading?

如果你不能在会议前进行关键测试，你应该如何进行阅读？

The vote will be a key test for the government of the prime minister Antonis Samaras which has a narrow majority in parliament.

总理安东尼斯·萨马拉斯在议会只有勉强多数派，因此这次投票对总理来说是次关键的考验。