who's 详细解释

who's

[hu:z]

=who is, who has

例句

1. who's that?.那是谁?。 2. who's done the reading?.谁已读过了?。 3. Who's [=who is] in charge here?这里谁负责? 4. a student who's [=who has] always been interested in math对数学素来有兴趣的学生