By using the large end as a lever, he tore away pieces of the wooden shell which enshrouded Margery and all her loveliness, till the aperture was large enough for her to pass without tearing her dress.
他用大的一端作为杠杆,撕掉了包裹着玛格丽和她所有可爱的木壳,直到开口大到足以让她通过而不会撕裂她的。