The change of ephemeral gully headward erosion, gully-wall collapsing and deep-cutting erosion were quantified in the three stages of initial-phase, metaphase and anaphase.
阐明了在浅沟发育初期、中期和后期三个发育阶段，沟头溯源侵蚀、沟壁扩展和沟床下切侵蚀变化规律。
2
While cutting away a tumor deep in the brain, she watches the movement of her surgical tools in a computer graphics image of the patient's brain taken before surgery.
在切除大脑深处的肿瘤时，她通过手术前拍的一份计算机图形图像来观察手术工具在病人大脑中的运动。
3
The wound, already deep, was aggravated by the necessary cutting out of the arrow-head.