a uniform还是an uniform
a uniform还是an uniform
a还是an uniform
uniform前+a还是an
"a uniform" or "an uniform"?
在英语里,是a uniform,还是an uniform
wear a uniform 还是wear uniform
是He'got a uniform.还是He's got an uniform?
"uniform"的前面是加"a",还是加"an"?
wear a uniform为什么不用an
请问 a uniform gravitational field 中的 uniform
uniform 前加的是a还是an ,哪umbrella 呢
dress a uniform 还是wear a uniform dess与wear的区别是什么?