"Effort" 本身就是一个名词，表示努力、劳动或尝试。

它通常用作不可数名词，表示某个人、组织或行为所付出的努力或劳动。例如：The company faced a lot of challenges, but they put in a lot of effort to overcome them.（公司面对了很多挑战，但他们投入了很多努力来克服它们。）The chef put in a lot of effort to create a delicious meal for his guests.（厨师为了给客人做出美味的一餐，投入了很多努力。）

effort就是名词，表示:

"努力

"，make an effort to do sth努力做某事