vernalize

例句：

1. 1. The snow has thawed in the spring.
   春天，雪已经融化了。
2. 2. Theground is warming up for plantingseason.
   地面正在为种植季节做准备。
3. 3.The greenhouse needs to vernalize beforeit can be used.
   温室需要先变暖才能使用。