adj.低的,矮小的,楼下的,低洼的,沮丧的,下贱的
adv.低声地,谦卑地,底下地
n.低点,低水平,牛的叫声
vi.(牛)哞哞叫
Doctor believed that his low sperm count was the problem.
医生认为他的精子数太低是问题所在。
With a low-pitched rumbling noise, the propeller began to rotate.
伴随着隆隆的低沉噪声,螺旋桨开始旋转起来。
Solid low-level waste will be disposed of deep underground.
放射性水平低的固体废料将做地下深埋处理。