Over the years, everything from gas canons, pyrotechnics, lasers, ultrasound, stuffed owls and radio-controlled model aircraft have been tried to scare birds away from runways.

多年来，气体标准、烟火使用、激光、超声波、猫头鹰标本和无线电控制的模型飞机，这一切都尝试着将鸟从跑道上吓跑。

youdao

Britain's Met Office, which is responsible for advisories on risks to aircraft from Icelandic ash, predicts the movement of ash clouds with a model built after the Chernobyl disaster.

英国气象局(Met Office)负责发布冰岛火山灰对飞机构成威胁的气象报告；它使用切尔诺贝利核灾难事故后建成的模型预测火山灰的运动。

youdao

This Small Aircraft Transportation System (Sats) would divert pressure away from the "hub-and-spoke" model of air travel.

这种“小型飞机运输系统（Sats）”将可以为中心辐射型（Hub-and-spoke）的空中旅行模式分担压力。

youdao

In the United States, people can fly model aircraft without approval from the Federal Aviation Administration if they keep the drone in line of sight, lower than 400 feet above ground and away from airports and air traffic.

CNN: PETA eyes drones to watch hunters, farmers

The anti-aircraft weapon I used was a 1940s era model from the Soviet Union.

CNN: What's Kim Jong Un's intention with the nuclear test?

The Navy model will operate from aircraft carriers, while the Air Force version will be based on land.

FORBES: F-35 Joint Fighter Soars, In Cost at Least