grate 雅思GRE专八

The nails in his boots grated on the stones.

他靴子上的钉子在石头上发嘎嘎。

The grit beneath her soles grated harshly on the wooden deck.

粘在她鞋底的沙砾蹭在木甲板上发刺耳的音。

The fire in the grate looked impish-demoniacally funny, as if it did not care in the least about her strait.

里的残火，张牙怒目，鬼头鬼脑，仿佛表示对于她的窘迫，丝毫都不关心。

For grating in the optical pick-up head, the compensability between the longitudinal and transverse error practical references on the manufacture of grating.

对光学头分束光栅，其纵误差与横误差间存在的互补性，对光栅的具体制作有着实际的参考价值。