Hawking's argument was that perhaps mankind should stay quiet and refrain from trying to send signals into outer space.

霍金的说法是，人类大概应该保持沉默，避免往外太空发射信号。

youdao

So we ask that you stay cheerful and confident regardless of the outer happenings because the changes are upon you.

所以我们请求你们保持“开朗”和“自信”，不要理会“外在”的变化是如何，因为改变的发生依赖于你们。

youdao

If we stay in the rat-race 24 hours, seven days a week, we are bound to pollute our inner space as well as the outer space.

如果我们保持每周七天二十四小时你死我活的竞争状态，我们必然会污染我们的内心世界，也会污染外部空间。

youdao

It will only underline the key political question for Britain: does the UK want to stay in the EU but in the outer circle, does it want to free itself from the EU's embrace or will it select to join a more integrated Europe?

BBC: Why Cameron is backing closer European integration

Goldman has to stay out ahead of its rivals in trying daring and innovative approaches that push the outer edge of the boundary between what is okay and what may not be.

FORBES: Magazine Article

But the next implication is that tighter integration of the eurozone countries would put Britain more clearly on the outer ring of a two-speed Europe - less integrated and showing every sign of wanting to stay there.

BBC: Britain pushes hard choices for Europe's hard core