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同学你好，这句话就是一个陷阱啦，为避免定位错，我们首先要看它的上下文有没有限制条件。there would be no weather-related上一句就是For instance, crops would be produced all year round, as they would be kept in artificially controlled, optimum growing conditions.这句话其实就是加了一个限制条件，也就是说，只有在they would be kept in artificially controlled, optimum growing conditions（将它们保持在人为控制的最佳生长条件下）才会是 no weather-related。这时候我们就要注意寻找下文有没有打破这个条件时会出现的情况。最后However前面的那一句其实就是了，yet we subject our food-bearing plants to the rigours of the great outdoors and can do no more than hope for a good weather year.就是说人类其实对于气候还是比较无能为力的，并不能将它们保持在人为控制的最佳生长条件下。所以再结合However后面那句，就比较明了了~