brother jumped straight up and down.straight是加强语气吗?

brother jumped straight up and down.straight是加强语气吗? jumped up and down go straight up and 直上直下? straight up Straight. straight you will fall straight down.straight是什么意思? Go straight along and then turn left.和Go straight down and t Straight Up 歌词 sit up straight 英文 Go straight down the Bridge Street and then turn left down go street turn this straight and left (连词造句)