for lack of后面加什么

　　She didn't win the game, but it isn't for lack of trying.

　　她輸了比賽，但并不是由于不夠努力。

　　Many small plants in that country closed down for lack of fuel.

　　由于燃料不足，那個國家的'很多小廠都關閉了。

　　They were not likely to fool away this high promise for lack of effort.

　　他們不太可能因為缺乏努力而把這一崇高的希望放棄。