Find something that makes a very quiet, steady sound. A small fan on a low setting or a real, non-electric, ticking watch or clock are ideal.

找一些安静、稳定的东西，一台低音的小风扇，一只电子手表或钟是一个很好的选择。

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They have since made a sound marriage with steady lives and thriving toddlers.

自此，他们婚姻稳定，还有了活泼可爱的孩子们。

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For some the sound could make sleep harder, but for others, the steady beat of the ticking, or the quiet hum of an electric motor in a fan can be very peaceful.

有些东西发出的声音令你很难入睡，但有些东西是固定行走或敲打的，风扇有规律的转动的声音听起来很和平。

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The long-term sound and steady growth of China-U.S. relations serves the fundamental interests of both countries.

WHITEHOUSE: President Obama's Bilateral Meeting with Premier Wen of China | The White House

We should adopt a long-term perspective, seek common ground while resolving differences, and work together to achieve sustained, sound, and steady development of our relations.

WHITEHOUSE: China State Visit Arrival Ceremony

But the way you keep the dollar sound is by maintaining a steady monetary policy, not by trying to manipulate the economy itself.

FORBES: Fact and Comment