We must be open about what we know and what we do no know - and in a fast moving world what you do not know is often as important as what you do know.

我们必须对自己知道什么和不知道什么采取一种坦率的态度，在一个快速运转的世界里，你不知道的常常和你知道的同样重要。

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If you want the things of the past not to weight you down any more, you must be open about it to a trustworthy person who will not make you feel guilty or ashamed.

如果你希望过去的事情不再将你压垮，你就必须把它敞开给一位值得信赖、不会让你感到内疚或羞愧的人。

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You do not have very good, but you must be a sincere, kind-hearted, open-minded man!

你不一定非常的优秀，但是，你必须是一个真诚、善良、豁达的好男人！

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She didn't hear the host fellow, our neighbor, say, whatever you do here in New York City, the one thing you must not do is open the window.

NPR: Video Raises Questions About Bhutto Killing

Unless a family member has access to it (you must not only give the person a key, but must also sign a form at the bank authorizing that designee to open it), the box could be sealed when you die, and it might take court action by your heirs to get it opened.

FORBES: Move up http://i.forbesimg.com t Move down

For those not aware, to take a photograph of lightning you must open the shutter and hope - or perhaps pray.

BBC: Lightning really does strike twice