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

2、an effortful attempt to attain a goal
為了達(dá)到目標(biāo)而努力。

3、Simple in theory, effortful in practice, and the most valuable, meaningful commodity in the world.
理論很簡(jiǎn)單，實(shí)踐起來卻需要付出努力，但你所收獲的成果，也是這個(gè)世界上最有價(jià)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(shí)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(shí)非歷經(jīng)數(shù)年苦功不可得。

7、an effortful attempt to attain a goal.
為了達(dá)到目標(biāo)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(diǎn)。

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(qiáng)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(diǎn)。