disappearance
看不見,失蹤,消失
Dis·ap·pear·ance n. The act of disappearing; cessation of appearance; removal from sight; vanishing.
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disappearance
n 1: the act of leaving secretly or without explanation [syn: disappearing]
[ant: appearance]
2: the event of passing out of sight [ant: appearance]
3: gradually ceasing to be visible [syn: fade]