The night side of the Moon, also, under certain circumstance, shows some luminescence phenomena.

月面的夜区在某些情况下也会显出某种发光现象。

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Under certain circumstance, hull form optimization is to look for the ship with lowest wave-making resistance.

从某种意义上讲，船型优化就是寻求最小兴波阻力的船型。

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Under certain circumstance there are few hours in life more agreeable than the hour dedicated to the ceremony known as afternoon tea.

在某些情况下，生活中很少有比把时间用在名为下午茶的仪式上更令人惬意的事了。

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What I'm curious about is if this administration is open to the concept suggested by others of a federal buy-back program of, under some circumstance, purchasing back -- as some states have -- ammunition clips, certain types of weapons, other things like that as part of way to deal with two things that are happening.

WHITEHOUSE: Press Briefing