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设置后景颜色
🗣️ 情景例句
You must be joking.
你肯定是在看玩笑。
He was at a loss for words.
他不知道该说什么好。
You either starve to death or live like Robinson Crusoe, Waiting for a boat which never comes.
要么饿死，要么像鲁滨孙那样，天天盼船来，却总没见船影。