injury可數嗎?

　　Shrugging off her injury, she played on.

　　她受了傷，卻繼續進行比賽。

　　The team was beset by injury all season.

　　這個隊整個賽季都因隊員受傷而受困擾。

　　She's still battling with a knee injury.

　　她還在同膝部的傷痛作斗爭。

　　Injury problems could shorten his career.

　　受傷的問題有可能縮短他的職業生涯。