“加长”的英语？

跑道需要加长。The runway had to be lengthened.由专职司机驾驶的黑色豪华加长轿车a long black chauffeur-driven limousine由于存在某种程度的航向不稳定性，机身被加长了。The length of the fuselage was increased due to a degree of directional instability....

“加长”的拼音为：jiā cháng...