I'm sure it will work if you can persist.
我相信如果堅持的話一定會有效的。

1 work（機(jī)器或設(shè)備）運轉(zhuǎn)
The computer doesn't work.I'd better buy a new one.
電腦不工作了。我還是買個新的吧 。
（想法，系統(tǒng)或方法）奏效
My plans finally worked.
我的計劃終于奏效了。
If you want to lose weight by dieting.I'm sure it will not work.
如果你想通過節(jié)食減肥，我保證不會奏效。
（藥物）起作用
The sleeping pill doesn't work for me.
安眠藥對我不奏效。
2 persist 堅持
persist in doing堅持做..
He persists in quiting his decent job and traveling on a tight budget.
他堅持放棄相當(dāng)好的工作，開始窮游。
A:I want to lose some weight!
我要減肥！
B:So do I.
我也是！
A:I have a yoga class tomorrow.Do you want to come with me?
我明天上瑜伽課，一起去嗎？
B:No,it's too expensive for me.I've decided to take some exercises on my own.
不了，太貴了。我決定自己做些運動。
A:What are you going to do?
你打算做什么？
B:Run around the track.In the morning I run for an hour,and in the afternoon I run around the building.
去操場上跑步。早上跑一小時，晚上繞大樓跑一圈。
A:Good.I'm sure it will work if you can persist.
不錯。我相信如果堅持的話一定會有效的。
B:I hope so.Would you like to join me?
希望如此。你愿意和我一起去嗎？
A:Sounds good.
好啊。