The heart pumps by expending and contracting of muscle.心脏通过收缩肌肉抽取和放出(血液).Not giving or expending freely; sparing.节俭的,节省的不随便施舍或花费的; 节俭的.You are expending your plant.贵公司在扩厂....
He is always eager for new experiences and ever-willing to experiment.他总是渴望拥有新的经历，而且永远愿意尝试。He was willing to make any sacrifice for peace.他愿意为和平作出任何牺牲。Young workers are more willing to desert jobs they don't like.年轻...