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- The airplane signaled for help. 飞机发出求救信号。
- The ship's radio sent out signals for help. 轮船上的无线电发出求助信号。
- The submarine signaled for help. 潜水艇发出求救的信号。
- They sent a signal for help by radio. 他们通过无线电发出求救信号。
- The ship gave out radio signals for help. 船发出无线电信号求助。
- Could send out signals for help. 又可以起到传递信号的作用。
- Wait at a window and signal for help with a flashlight or by waving a sheet. 在窗口处等待，并用闪光灯或挥舞床单来发出求救信号。
- The front-line units repeatedly signalled for help. 前线频频告急。
- The newspaper got a scoop on the airplane crash. 该报独家报导了那次飞机失事。
- The airplane overran the runway. 飞机滑行超过跑道。
- We picked up signals for help from the burning ship. 我们接收到那艘着火的轮船发出的求救信号。
- When do you guess the airplane will take off? 你猜飞机何时要起飞？
- The catcher signaled for a low fast ball. 捕手发出投快速低球的信号。
- The airplane ascended higher and higher. 飞机渐渐升高。
- We picked up signals for help from the burning plane. 我们收听到着火的飞机发出的求救信号。
- The airplane was attacked by dropping bombs. 这架飞机遭到炸弹的袭击。
- The airplane leveled out at2000 feet. 这架飞机在上升至2,000英尺处继续平飞。
- The airplane dusted the crops with an insecticide. 飞机给农作物撒农药。
- The airplane shaved the top of a tree. 那架飞机从树梢掠过。
- The airplane flies at 900 kilometers an hour. 飞机以每小时900公里的速度飞行。
