centerboard
['sentəbɔ:d]
n. (帆船的)活动船板, 中插板
例句与用法:
The topic centers on the crisis in these two countries.
话题以那两个国家的危机为中心。
Our hopes were centered on him.
我们的希都集中在他身上。
词形变化:
名词复数: centers of gravity |
n.
【海】活动船板