英语语法分析

Just before it rains, odors become stronger.

就在下雨之前，气味变得更浓了。

This is because odors are repressed in a fair high pressure center.

这是因为气味在一定的高压中心中被抑制住了。

When a bad weather low moves in, air pressure lessens, and odors are released.

当恶劣天气到来，气压降低、气味释放。