I can't drive a car, but I have a motorbike license.
我不会开汽车,但我有摩托车的驾驶执照。
Happy landing.
祝您早安 注:是送行者向上飞机的人说的告别语。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.