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His parents were disconcerted by his silence .

他的双亲因他的沉默而感到惊慌失措。

Be disconcerted by a sudden attack .

因突如其来的攻击而惊慌失措。

Victoria looked disconcerted for a moment .

维多利亚有一阵子显得很不安。

The offender was not disconcerted in the least .

那闹事的人半点也没有惊惶失措。

It disconcerted us to learn that they had refused our offer .

得知他们拒绝了我们的提议，我们感到很窘。