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。

youdao

Because of this loop, which is promoted by warmer temperatures in winter and spring, well, it looks like the tundra may be turning into shrub land.

由于冬春两季气温的上升加剧了这样的循环，因此，苔原可能正在向灌木林地转变。

youdao

Because of the cold temperatures, the tundra has two layers: top layer, which is called the active layer, is frozen in the winter and spring, but thaws in the summer.

由于寒冷的气温，冻土带有两层：最上面的一层被称为活动层，在冬季和春季被冻结，但在夏季解冻。

youdao

Everything they said remained frozen all winter long, and did not melt until spring.

VOA: special.2009.01.24

During spring, warm air moves north and mixes with cold air remaining from winter.

VOA: special.2009.06.09

How will the winter and spring stock markets discount President Barack Obama?

FORBES: Discounting President Obama

The Athletic Council meets monthly during the fall, winter and spring and makes recommendations on athletic policy including ticket prices.

NPR: APNewsBreak: OSU Head Jabs Notre Dame, Catholics

Our predictions for last autumn, winter and spring have all given accurate advice, giving more confidence in our latest summer forecast.

BBC: Met Office cools summer forecast