然而，这种情况在20世纪70年代中期，美国开始放松对运输业的管制时开始改变。
This started changing, however, in the mid-1970s, when America began to deregulate its transportation industry.
结果关于航天飞机解体的情况一份雷达记录也没有——雷达只记录了那些从东德克萨斯州上空飘落，并最终进入空中交通管制范围内的金属雨。
As a result, no radar record of the breakup exists-only of the metal rain that drifted down over East Texas, and eventually came into the view of air-traffic control.
各国必须向国际麻醉品管制局提供关于麻醉物质的详细年度估计情况和报告以便采购或生产受管控的药物。
Countries must provide detailed annual estimates and reports for narcotic substances to the International Narcotic Control Board to procure or produce controlled medicines.
应用推荐