N the layer just below the surface of water, the earth, etc 下层面
So the lack of light in Europa's sub-surface ocean doesn't automatically rule out life forming.
因此，在欧罗巴表层以下缺少阳光的海洋中无法自动排除生命存在的可能。
Relief is in sight for some：from 2010 air-conditioned trains will begin to appear on the four sub-surface lines.
对于把一些人来说希望在即：从2010年开始有四辆浅层隧道空调地铁将会出现。
Relief is in sight for some: from 2010 air-conditioned trains will begin to appear on the four sub-surface lines.
不过部分乘客是解脱在即，因为从2010年开始，4条浅层隧道线路将有空调车开始运行。
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