Grab a seat , I won't keep you a moment.

赶紧找个座位吧，我不会耽误你太多工夫。

《牛津词典》

It is rude to grab a seat.

抢占座位是不礼貌的。

youdao

You can always grab a seat on the bus.

你在公共汽车上总能抢到座位。

youdao

If you're in the mood for sushi, grab a seat at Sachi Sushi (Ostra Forstadsgatan 23B).

CNN: Sample a Swedish seafood smorgasbord

It is standing room only in summer, but as the weather gets brisker it becomes easier to grab a seat and enjoy the ambiance.

BBC: Visiting the Hamptons off season

Grab a Seat With Fewer Federal Taxes.

FORBES: Congress Offers Tax Free Flights... For Now