The department has just mailed out 300,000 notices.该部门刚刚邮寄出三十万份通知单。Sometimes, terrorists will mail out parcels containing anthrax to create a terrorist event.有时候，恐怖分子会寄出带有炭疸病毒的邮包来制造恐怖事件。This week, the company mailed out its annual report.公司本周群发了年度报告。