question mark
释义
问号：用于在句子结尾表示直接疑问的标点符号。
例句
1·Who invented the question mark ?
谁发明了问号？
《柯林斯英汉双解大词典》
2·There is a question mark over the future of geriatric care.
老年保健医学的未来是一个问号。
《柯林斯英汉双解大词典》
3·There's still a big question mark hanging over his future with the team.
他在队中的前途还是个大问号。
《牛津词典》
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