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来源:雅诚德英语网
The puzzling clusters of dark lines fade in winter and reappear in the spring.
这些令人费解的深色线条会在冬天销声匿迹,春季时又重新出现。
The puzzling clusters of dark lines fade in winter and reappear in the spring.
这些令人费解的深色线条会在冬天销声匿迹,春季时又重新出现。