Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/f2b0e2066c55e994b912a56b137bda19.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 centre of gravity英英字典_centre of gravity剑桥英语解释_centre of gravity柯林斯英文解释_食材鋪反向词典
1. N-COUNT The centre of gravity of an object is a point in it. If this point is above the base of the object, it stays stable, rather than falling over. 重心