ぎくりとする の訳語→ alarmed start stop
はっと の訳語→ abruptly alarm alert automatically dead hurriedly jolt quick quickly sharply short sudden suddenly swiftly
思いがけない の訳語→ abrupt accidental alarming curious disproportionately extraordinary piece strange surprised unbelievable unexpected unheralded unsuspected
茫然と の訳語→ blankly fascinated stunned stupefied