I do carpentry. I'm building a dry sink.

我爱干木工活儿 我正在修建一个水池。

Outside, cool, dry, sinking air starts to wrap around the back of this mesocyclone, forming what's known as a rear flank downdraft.

外部那些又干又冷的下沉气体开始在 “中气旋” 后侧环绕，形成一个 “后侧下环流”。