定期航班的数量正让空中交通指挥系统不堪重负。The volume of scheduled flights is straining the air traffic control system.两家航空公司将在票务和航班安排上展开合作。The two airlines will cooperate on ticketing and schedules.我们大多数航班行李限重为每位乘客44磅。Most of our flights ha...
他仍然是维系该国脆弱的政治平衡的支柱。He remains the anchor of the country's fragile political balance.做自行车前轮抬起后轮平衡的特技to do a wheelie森林里有高度敏感、灵敏平衡的各种生态系统.There are highly sensitive and delicately balanced ecosystems in the forest....