最长的

• first born
• longest

例句

1. 她任职时间最长的是什麽工作？
   What's the longest she's held down a job?
2. 任职时间最长的官员事事优先。
   The longest-serving officer always takes precedence.
3. 长江是世界上最长的河流之一。
   The Changjiang River is one of the longest rivers in the world.
4. 浊水溪是其中最长的一条。
   The Chuo-shui River is the longest one among them.