She's already had to endure three painful operations on her leg.

endure 是动词，意思是"忍受、忍耐"，指承受痛苦或困难而不屈服。这个词来自拉丁语，由前缀 en-（表示"使"）和词根 dure（与"持久"相关）组成，字面意思是"使持久"，引申为"忍耐"。