原文视听

I'm lame...
我腿瘸
friendless...
又没有朋友
The only thing I've got is my boy...
我只有儿子和我相依为命
And they're gonna take him away from me.
他们还要把他从我身边抢走
If they take him away, I will truly...
如果他们把他从我身边带走
truly become dust.
我就真的没有活着的意义了
Not if you have power.
如果你有力量就可以改变这些
You may as well say diamonds.
你怎么不说用钻石可以改变一切呢
Get a hold of yourself.
冷静一点
Think.
仔细想想
Why do you think that someone as powerful as the dark one
你觉得为什么像黑暗者这么强大的人
would work for a useless fool like the Duke of the Frontlands?
会给方特兰公爵这种鼠辈效力
Tell me.
为什么
The Duke has the dark one in thrall.
公爵是黑暗者的绝对主人
He's enslaved him with the power of a mystical dagger.
他用一把神秘匕首的力量奴役了他
And on the blade is written a name--
匕首刃上有一个名字
The true name of the dark one.
那是黑暗者的真实姓名
If you were to steal the dagger...
如果你偷来了这把匕首
then you would control the dark one yourself,
你就将成为黑暗者的主人
and then no one
从此再也没人
would be able to take your son away from you.
能把你的儿子抢走

重点解释

原文:If you were to steal the dagger...如果你偷来了这把匕首。
【steal的短语】
steal along
悄悄前进
steal away
(把某物)偷走
溜掉
(时间)不知不觉地过去
steal into
偷偷跑进, 溜进, 走私运入, 偷偷放进(人或物)
steal off
偷去, 拿跑
steal on [upon]
悄悄逼近; 潜袭
(时间)不知不觉地来到
steal out (of)
(从...)偷偷溜出
steal over
悄悄地呈现, 渐渐弥漫
have one's purse stolen
钱包被偷
steal sb. sth.
为某人窃取某物
steal sb.'s heart
巧妙地博取某人的欢心
steal a glance at sb.
偷看某人一眼

原文:No one would be able to take your son away from you.从此再也没人能把你的儿子抢走。
【can和be able to 的区别】
1.can could 表示能力；可能 (过去时用could),
只用于现在式和过去式(could)。be able to可以用于各种时态。
They will be able to tell you the news soon. 他很快就能告诉你消息了。

2.只用be able to 的情况
a. 位于助动词后。
b. 情态动词后。
c. 表示过去某时刻动作时。
d. 用于句首表示条件。
e. 表示成功地做了某事时，只能用was/were able to， 不能用could。
He was able to flee Europe before the war broke out.
= He managed to flee Europe before the war broke out.

注意：could不表示时态

1.提出委婉的请求，（注意在回答中不可用could）。
Could I have the television on?
Yes, you can. / No, you can't.

2.在否定，疑问句中表示推测或怀疑。
He couldn't be a bad man.
他不大可能是坏人。