月球的低重力也意味着由普通氢气和氧气组成水将会比重水更快的消失，可能导致在月球上水的氘含量。
The moon's low gravity also means that water composed of regular hydrogen and oxygen will escape quicker than heavy water, perhaps leading to a concentration of deuterium in the water of the moon.
基于空间的云量观测显示武汉天晴的可能性稍微比重庆低些，但是基于地表的观测给出了肯定的结论，武汉是中国最有希望的内陆地区。
Spacebased cloud observations show that Wuhan has sunshine prospects slightly lower than Chongqing, but surface-based observations give it the nod as the most promising inland site in China.
社区大学的申请门槛比重点大学低很多。
The threshold for entering a community college is much lower than for a major university.
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