1·The orientation of the planet's orbit is changing continuously.
该行星轨道的方向不断变化。
—— 《牛津词典》
2·This kind of periodic orbit is only a phase in a comet's life.
这种周期性轨道只是彗星生命中的一个阶段。
3·Periodic changes in Earth's orbit could affect Earth's climate.
地球轨道的周期性变化会影响地球的气候。
4·Its orbit brought it relatively close to the Earth, within 122 million miles of it.
它的轨道将它带到了距离地球1.22亿英里之内，距离地球相当之近。
5·The first private mission outside of Earth's orbit is closer than many of us think.
第一个在地球轨道之外执行的私人任务比我们预想的更早。
1·The lesions changed the structure of orbit when polyostotic bones were involved.
当涉及多骨性骨时，病变改变了眼眶的结构。
2·The classic "blowout fracture" is the result of a blow to the anterior orbit, which increases retroglobar pressures thus breaking the weakest portion of the bony orbit, the medial floor.
典型的“爆裂性骨折”由作用于眼眶前部的冲击力造成，其可增加眼球后部的压力，从而破坏骨性眼眶的最薄弱部分——内侧壁。
3·The maintained activity of the neuron during fixations is proportional to the angular deviation of the eye in orbit.
在眼球固定与眼眶中眼球的角度偏差成比例期间，神经元的活动就维持不变。
4·The most common cytologic forms of malignant lymphoma involving the orbit are the histiocytic and lymphocytic types.
累及眼眶的恶性淋巴瘤的最常见的细胞学类型是组织细胞和淋巴细胞型。
5·Inspect conjunctiva for color, edema, or lesions by gently depressing lower lid with thumb pressed against bony orbit. Ask client to look up.
检查结膜颜色、水肿，或拇指靠住眼眶轻轻按压下眼睑检查有无损伤。嘱受检者抬眼。