求翻译：在建桥的两年半时间里，茅以升没有星期天，没有假期，为了监督工程的进度，他坚持以身作则，经常同工人们吃住在一起，甚至通过沉箱下水进行实地调查，以便及时修正施工规划方案。有一次，当他下到水深30米的沉箱里的时候，日机突然来袭，工地上立刻关闭电源，茅以升和工人们一起都被困在了沉箱里面。虽然大家都很沉着，但当时并不清楚是什么原因。等到升上水面之后，才知道是空袭的缘故。后来，他再次回忆起当时的情景说：“在水下的处境，真是永久难忘！”是什么意思？

In the bridge 's two and a half years, Mao Yisheng no Sundays , no holidays , in order to supervise the progress of the project , he insisted on leading by example , often live and eat together with the workers , and even the water field investigation by the caisson for timely correction of construc

The construction of a bridge of two and a half years, Plymouth in no Sunday, there is no holiday, in order to monitor the progress of the works, he insisted on leading by example, often with equal people eat and stay together, even by caisson launching a field investigation, in order to facilitate t

In constructs the bridge in two years half time, Mao Yisheng does not have Sunday, does not have the vacation, for the surveillance project progress, he persists to set an example, frequently with worker food and lodging in same place, even carries in-the-spot investigation through the caisson sewe

Building bridges for 2.5 years, Mao Yisheng, failed Sunday, no time off, in order to monitor the progress of projects, he insisted on leading by example, often eating and living together with the workers and even launched by caisson to carry out field surveys in order to make timely corrections cons

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