他们学习俄语。
It is difficult (for me) to learn Russian.
(我)学俄语是件困难的事。
Only in this way can we learn Russian well.
只有这样，我们才能学好俄语。
I am starting to learn Russian.
我开始学俄语。
We'll learn Russian next year.
明年我们要学俄语。
于是他开始学俄语。
如今学习俄语还有用吗？
坐在车里学俄语超实用！
Only in this way can we learn Russian.
只有这样才能学会俄语。
This is the best way to learn Russian.
（修饰关系）这是学俄语的最好的方法。
From then on he began to learn Russian.
从那时起，他开始学俄语。
Marx began to learn Russian in his fifties.
马克思学俄语时已五十多岁了。
We find it most difficult to learn Russian.
我们发现俄语最难学。
If you want to learn Russian, I can help you.
如果你想学俄语，我可以帮你。
Eg: We find it most difficult to learn Russian.
我们发现俄语最难学。
Mary always went out of her way to help me learn Russian before I went to Moscow.
我去莫斯科前，玛丽总是不怕麻烦地帮助我学习俄语。
How long did it take him to learn Russian well enough to read articles and reports?
他花了多长时间学好俄语能够阅读文章和报导？
He felt it important to study the situation in Russia, so he began to learn Russian.
他感到研究俄国的形势很重要，因此他便开始学习俄语。
Mary always went out of her way to help me learn Russian before I went to Moscow where I soon picked it up.
过去，玛丽总是不怕麻烦地帮助我学习俄语。等我到了莫斯科后，我很快就学会了这门语言。
I had always meant to learn Russian and had enrolled for courses in the past but they never started because of lack of Numbers.
以前，我一直想学俄语，过去也曾在几个学习班报过名，但都因为人数不够而无法开课。
I had always meant to learn Russian and had enrolled for courses in the past but they never started because of lack of Numbers.
以前，我一直想学俄语，过去也曾在几个学习班报过名，但都因为人数不够而无法开课。
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