1. The president maintains an iron grip on his country. 总统保持着对国家的铁腕统治。
2. Amid all the changes, Antarctica maintains its allure. 在所有这些变化中,南极洲仍然保持着它的魅力。
3. It's Laura who cries at Dean's abandonment, while Dean maintains this composure. 是劳拉为迪安的被抛弃而哭泣,而迪安保持着这种镇静。
4. A particular animal typically maintains its own characteristic cycle duration with great precision for many days. 某一种动物通常可以在很多天内极其精确地保持其特有的周期时间。
5. Under the control of the Sun's gravitational force, each planet maintains an elliptical orbit and all of them travel in the same direction. 在太阳引力的控制下,每个行星都维持在一条椭圆形的轨道上,并按照相同的方向移动。