2--But it's actually not always about eating. Sink your teeth into
 
1--Here is your Russian book, Anna. Thanks for letting me borrow it!
 
2--Oh, are you done with level 1 already?
 
1--Yeah, I finished last week. And I've already finished level 2!
 
2--Wow, you are really sinking your teeth into learning Russian!
 
1--Well, I just want to impress my new friend.
 
2--To "sink your teeth into" something can mean to take a very large bite of food.
 
1--But as an idiom, it means to become very involved and interested in something new.
 
2--You might sink your teeth into a book, a new project at work, or, in Jonathan's case, learning a language!
 
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注解：
 
1.violent暴力的
2.finished完结的
3.impress印象

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译文：

1--这个表达听起来像是一种粗鲁的吃饭方式。
2--但是它并不总是与吃有关。全身心投入
1--安娜，这是你的俄语书。谢谢你借给我。
2--哦，你已经学完了一级？
1--嗯，我上周就学完了。我把二级也学完了！
2--哇哦，你学俄语可真是努力啊！
1--嗯，我想给我的新朋友留下印象。
2--“sink your teeth into”某件事可以是指吃一大口食物。
1--但是作为习语来讲，它的意思是对某件新事物特别感兴趣。
2--你或许会沉迷于一本书、工作中的一项新工程，或者像乔纳森一样，沉迷于一种语言！