The temperature increase has occurred during the winter and spring, not during the summer.
气温上升发生在冬季和春季，而不是夏季。
Such is the contrast between winter and spring.
冬天和春天的对比就是这样。
The variations are simple in winter and spring, but complex, in summer.
冬、春季变化较为简单，夏季较复杂。
The leguminous forage grew strong especially during the dry winter and spring seasons.
温带豆科牧草冬春期表现较好。
Summer, Autumn, Winter and Spring.
夏季，秋季、冬季和春季。
Winter and spring to the upper troposphere, almost no water vapor.
冬季和春季到对流层上层基本无水汽。
Winter and spring to the upper troposphere, almost no water vapor.
冬季和春季到对流层上层基本无水汽。
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