Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/b01f9d5f7a2c1b66570439deae5511d6.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 ballasts英英字典_ballasts剑桥英语解释_ballasts柯林斯英文解释_食材鋪反向词典
1. N-UNCOUNTBallast is any substance that is used in ships or hot-air balloons to make them heavier and more stable. Ballast usually consists of water, sand, or iron. 壓艙物