··Straight up··这一短语是正确的吗?About Straight up:在看电影时,剧情里看到一群外国年轻人在支持某一个人所说的提议后,表示赞成,然后出现straight up 这词,但只是听到,并没有英文字幕.请问表示赞同的口语,是这样拼写吗?straight up 请英文巨头帮帮忙,^-^

straight up:
adv （用于提问和回答问题）直率地,真实地
例句与用法:
1.She went straight up to the door and knocked loudly.
她径直走到门口重重地敲门.
2.A short haircut in which the hair is brushed straight up and cropped flat across the top.
平头一种头发被竖直梳起然后把顶部剪平的短发式样
3."He offered my400 pounds." "Straight up?" "Straight up!"
"他出价400英镑.""真的?""千真万确."