appear的名词是appearance，形容词是apparent。appear，不及物动词，意为“出现；显得；似乎；出庭；登场”。
例句：
Her sudden appearance did not seem to perturb him in the least.
她的突然出现似乎一点也没有令他不安。
He's very insecure about his appearance.
他对自己的长相没有信心。
It was the president's second public appearance to date
这是总统到那时为止的第二次公开露面。
How can we resolve this apparent contradiction?
我们怎样才能解决这个明显的矛盾呢？
She received the news with apparent unconcern.
她接到这消息时显然无动于衷。
A change in the pattern of his breathing became apparent.
他的呼吸方式明显起了变化。
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