Spring is coming. Spring is the first season of the year. —
春天来了。春天是一年中的第一个季节。 —

In China, spring comes in February. —
在中国，春天是在二月来临的。 —

It is still cold, but it is getting warmer and warmer. —
天气仍然很冷，但是越来越暖和。 —

The days get longer and longer. —
白天变得越来越长。 —

The leaves on the trees begin to turn green. —
树上的叶子开始变绿。 —

Then they come up green leaves in the spring wind on the ground. —
然后它们在春风中在地面上长出绿叶。 —

Spring is also sowing time season.
春天也是播种的季节。