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戸惑う， 途惑う， とまどう

1. to be bewildered, to be perplexed

感到困惑，感到茫然

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一体， いったい

1. (what) the heck, (why) in the world, (who) on earth 2. one object, one body, unity 3. one form, one style 4. one Buddhist image (or carving, etc.) 5. generally, in general

一体；到底(怎么回事)；通常，一般来说

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考え込む， 考えこむ， かんがえこむ

1. to ponder, to brood

沉思，苦思

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