speechless
[ˈspitʃlɪs]
adj.
无言的;
（因惊愕）一时语塞的;
默然;
无言以对;
例句:
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He sat mute, speechless with ecstasy, gazing into the sky.
他静静坐着，凝视天空，一言不发，心驰神往。
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The little boy was speechless with shock.
那小男孩惊得说不出话来。
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Alex was almost speechless with rage and despair.
亚历克斯又生气又绝望，几乎说不出话来。
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For a brief, rare moment, Tyler was speechless.
来自NEWYORKER
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On his Twitter feed, Revis posted SPEECHLESS !!!
来自WSJ
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His response left hospital officials speechless, Dr. Shah said.
来自WSJ