In Engpsh, "飞机过水门" can be translated as "airplane passes through the water gate". The phrase "water gate" comes from the fact that a body of water, such as a river or a canal, often has a gate or a barrier to control the flow of water. In this context, the airplane is passing through the gate in the body of water. Here are some example sentences with Engpsh translations:
The airplane passed through the water gate as it descended towards the landing strip. (飞机经过水门，降落在跑道上。)
The water gate was opened to allow the airplane to pass through. (为了让飞机通过，水门被打开了。)
The pilots skillfully navigated the airplane through the narrow water gate. (飞行员熟练地驾驶飞机穿过狭窄的水门。)