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Before the dam was built, Campbell River used to flood in the spring.
大坝建好之前，坎贝尔河常在春季发大水。
《柯林斯英汉双解大词典》
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They were building a dam last spring.
去年春天他们一直在修一个水坝。
youdao
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They were building a dam last spring.
去年春天他们不断在修一个水坝。
youdao
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They were building a dam last spring.
去年春天他们不断在修一个水坝。
youdao