6'

Watch manufacturers are facing fierce competition.
手表厂商面临着激烈的竞争。
watch manufacturer 手表制造商
fierce competition

7'

Playing games can help to develop children's team spirit.
玩游戏可以培养小孩的团队精神。
team spirit 团队精神

14'

Aerobic exercise is a great way to burn calories.
有氧运动是消耗热量的好方法。
aerobic exercise 有氧运动
burn calories 燃烧卡路里，消耗热量