...a mass of crimson flowers.

一大片火红的花

...the lurid, crimson glow of the blast furnaces.

鼓风炉里耀眼、通红的火光

I used to refuse invitations to parties because I knew I'd go crimson every time someone talked to me.

我过去总是拒绝聚会邀请，因为我知道每当有人和我说话，我就会脸红。