1·Benedict pointed downward again with his stick.
贝内迪克特又用他的拐杖向下指了指。
—— 《柯林斯英汉双解大词典》
2·Structures can be analyzed in terms of how they deal with downward forces created by gravity.
人们根据建筑物如何处理由重力产生的向下的力来分析它们。
3·It is not unusual for the roots of some desert perennials to extend downward more than ten meters.
一些沙漠多年生植物的根向下延伸十米以上，这并不少见。
4·Silicates such as mineral quartz drifted downward and mixed with denser materials as they reached Earth's core.
石英等硅酸盐向下漂移，在到达地核时与密度更大的物质混合。
5·Place you palm downward and make an inconspicuous waving gesture, which will produce instant and satisfying results.
手掌向下，做一个不显眼的手势，会产生立竿见影的效果。