Professional footballers are sometimes injuryprone during intense seasons.

injury 是名词，意思是"伤害、受伤"，指身体受到的损伤。 prone 是形容词，意思是"易于...的、有...倾向的"，常与介词to连用表示"容易发生某种情况"。 injury-prone 是复合形容词，描述"容易受伤的体质或状态"，指某人或某群体特别容易遭受运动伤害。