Word always gets out no matter how careful you are.

　　無(wú)論你多么小心，總會(huì )有消息走漏。

　　Parallel lines will never meet no matter how far extended

　　無(wú)論延伸多長(cháng)，平行線(xiàn)永不相交。

　　It was up to him to make it right, no matter how long it took

　　由他負責把事情擺平，不管花多長(cháng)時(shí)間。

　　No matter how well you know Paris, it is easy to get lost

　　不管你對巴黎多么熟悉，也很容易迷路。

　　No matter was too small to warrant his attention.

　　再小的事也會(huì )引起他的注意。