better dead than red (或better red than dead)

a cold-war slogan claiming that the prospect of nuclear war is preferable to that of a communist society (or vice versa)

（冷战口号）宁打核战，不要共产（或：宁要共产，不打核战）

(as) red as a beetroot (北美

(of a person) red-faced, typically through embarrassment

（尤指受窘）满脸通红

red in tooth and claw

involving savage or merciless conflict or competition

（冲突，竞争）野蛮的，残忍的

nature, red in tooth and claw.

野蛮残忍的自然界。

the red planet

a name for Mars

火星

(like) a red rag to a bull

an object, utterance, or act which is certain to provoke someone

惹人恼火的事物（言行）

the refusal to discuss the central issue was like a red rag to a bull.

拒绝讨论中心问题像激怒公牛的红布。

reds under the bed

used during the cold war with reference to the feared presence and influence of communist sympathizers in a society

床下藏有赤色分子（指冷战中对同情共产主义者的恐惧）

see red

(informal)become very angry suddenly

(非正式)突然发怒，火冒三丈

the mere thought of Piers with Nicole made her see red.

她一想到皮尔斯和妮可儿在一起就火冒三丈。

in the red

Operating at a loss; in debt.

赔本经营的；负债的