我曾经偶尔听到有些人说：“他一定是专业的，因为他用三脚架呢。”

I once overheard someone say, "he must be a real photographer because he's using a tripod."

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上述两根管子最开始是接到水面“深水地平线”钻井平台的，而如今已经重新被专业人员用重质的管道连接到了附近一个叫做管汇（manifold）的金属架状结构上。

The two pipes, which originally went up to the Deepwater Horizon, have been reconnected with heavyweight hoses to a metal framework called a manifold that has been installed nearby.

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有时候一架钢琴经常需要被彻底地检查，这样才能符合我们的专业要求。

Sometimes a piano must be completely overhauled in order to meet our 'certified' requirements.

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