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On arriving at the front they began to study the defense works.
刚一到达前线，他们就开始研究防御工事。
youdao
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The bad weather delayed the defense works. It is dependent on the weather.
恶劣的天气耽搁了防御工程。工程取决于天气。
youdao
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The bad weather delayed the defense works. It is dependent on the weather.
恶劣的天气耽搁了防御工程。工程取决于天气。
youdao