1、To do this years of effortful study, motivation is a very important factor
長達數(shù)年的刻苦學(xué)習(xí)的關(guān)鍵：激勵！

2、an effortful attempt to attain a goal
為了達到目標而努力。

3、Simple in theory, effortful in practice, and the most valuable, meaningful commodity in the world.
理論很簡單，實踐起來卻需要付出努力，但你所收獲的成果，也是這個世界上最有價值、最有意義的。

4、Anecdotal accounts suggest that effortful learning may also help some patients.
還有一些消息指出，專注學(xué)習(xí)或許也能幫助一些病患。

5、It takes about ten years of effortful study to become an expert
成為一名專家=十年的時間+刻苦學(xué)習(xí)

6、This structured knowledge is built by years of effortful study.
結(jié)構(gòu)化知識非歷經(jīng)數(shù)年苦功不可得。

7、an effortful attempt to attain a goal.
為了達到目標而努力。

8、marked by a painfully slow and effortful manner
以痛苦的遲緩和需要努力的方式為特點。

9、"You never sing enough," she added. Her smile to me was effortful and pinched.
“你從來就不多唱幾句，”她又說，沖我微笑一下，顯得牽強而痛苦。

10、Marked by a painfully slow and effortful manner.
以痛苦的遲緩和需要努力的方式為特點。