The opposite of fast daytime services, night trains chug at a relaxed pace, aiming to deliver passengers refreshed and ready for the day rather than getting from A to B in the shortest possible time.

与日间的快速服务不同，夜班列车伴随着轧轧声悠闲而缓慢的前进，旨在让乘客养精蓄锐准备迎接新的一天，而不是用最短时间从起点到终点。

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But B set (leave the epidermis stem-cell set) the cell stick wall opposite and slow-moving, and formation of gather to fall small and little.

而B组(弃掉表皮干细胞组)细胞贴壁相对缓慢，且形成的集落小而少。

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The opposite of fast daytime services, night trains chug at a relaxed pace, aiming to deliver passengers refreshed and ready for the day rather than getting from A to B in the shortest possible time.

和火车白天快速的运输服务相反，夜间的火车放缓了节奏，不是在尽可能短的时间把你从A地送到B地，而是让旅客在火车上恢复精神，迎接新一天的生活。

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sa So we have 1 s a, and we're drawing this as having a positive amplitude, but since we have destructive interference we're going to draw 1 s b as having the opposite sign, so we have a plus and a minus in terms of signs.

我们有，我们把这画成一个正的振幅，但因为我们是相消干涉,我们把1sb画成相反的符号，所以我们有一正一负两个符号。

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