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- fly by light system 光传操纵系统
- In misty weather, the pilots have to fly by instruments. 大雾天飞行，飞行员只得靠仪表。
- They had to fly by the seat of their pants. 他们不得不凭直觉飞行。
- Chemical decomposition induced by light or other radiant energy. 光分解，光解作用由光或其它光源引起的化学分解
- To fly by beating the air with the wings. 振翼飞行用翅膀拍打空气而飞行
- I just caught a sight of a bike flying by. 我只是看见一辆自行车飞快驶过。
- In the heavy fog he had to fly by apparatus. 在浓雾中他只得靠仪器飞行。
- Many lasers are pumped by light. 许多激光器是用光来激发的。
- To fly by the seat of his pants. 现在人们用。
- The old bridge can only be used by light vehicle. 那座旧桥只能通行轻型车辆。
- Airplane pilots must always fly by the book. 飞行员应按规则飞行。
- Cassini will next fly by Enceladus on October 31. 卡西尼号将在10月31日再次飞越土卫二。
- The old bridge can only is used by light vehicle. 那座旧桥只能通行轻型车辆。
- Birds learn to fly by instinct . 鸟类学习飞翔是出于本能。
- The old bridge can only be used by light vehicles. 那座旧桥只能通行轻型车辆.
- Watch it fly by as the pendulum swings. 看着它随着钟摆的摆动飞逝，
- It's get to the outdoor park by light rail. 乘轻轨电车到户外公园又快又便利。
- You Can go there by light railway. 你可以乘轻轨去。
- Is a chemical reaction driven by light ray. 就是光线驱动的一个化学反应。
- A vacation flying by; youth that is soon flown. 匆匆飞逝的假期; 稍纵即逝的青春
