“_”称(chēng )为“下划线”1键盘上(shàng )“0”数字后边(biān )的按键2用SHIFT键(jiàn )加(jiā )上(shàng )quotquot 就可以(yǐ )在(zài )键盘上(shàng )打出(chū )3在英文输入状(zhuàng )态(tài )下才能成(chéng )quot_quot,在中文输入状态下是(shì )“”4下划(huá )线大(dà )家经(jīng )常接触(chù )到的一般用在(zài )名(míng )字(zì )的输入中,只可以
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