低気圧ていきあつ (teikiatsu)

低てい気圧きあつが近ちかづいています。

A low pressure is approaching.

今日は気圧が低い。

It's low pressure today.

今日は課長が低気圧だぜ.

The boss is out of sorts [in a bad temper] today.

低気圧は東南に進んでいる.

The low pressure area is moving southeast.

熱帯低気圧が台風に発達した.

The tropical low (pressure area) developed into a typhoon.

台風ではなく、低気圧のせいだと思う。

I don't think it's from a typhoon, I think it's because of low air pressure.

台風は勢力が衰えて温帯低気圧に変わった.

The typhoon petered out [subsided] into an extratropical cyclone.

これらの船ふねは数すう日間にちかん低てい気圧きあつの中なかにいることができるくらい速はやく走はしれる。

These sea boats are fast enough to stay in a depression for several days.