incumbent

The incumbent senator faces a tough challenge from a younger opponent in the upcoming election.

(Chinese) 现任参议员在即将到来的选举中面临着来自年轻对手的严峻挑战。

In many local elections, the incumbent has a significant advantage due to name recognition.

(Chinese) 在许多地方选举中，现任者由于知名度高而具有显著优势。

The incumbent president is seeking a second term to complete his economic reforms.

(Chinese) 现任总统正在寻求连任，以完成他的经济改革。

It is incumbent upon the board members to ensure the company remains profitable for shareholders.

(Chinese) 董事会成员有义务确保公司保持盈利，以回报股东。