What a useful dictionary this is!
这是一本多么有用的字典啊！
Peter, an honest boy, bought a useful dictionary in the store yesterday.
彼得，一个诚实的男孩，昨天在商店买了一本有用的词典。
我需要一本有用的字典。
我上月买了一本袖珍字典。
On the one hand, this is a useful dictionary, (while) on the other hand it is very expensive.
一方面这是一本好字典，而在另一方面它却很昂贵。
An online dictionary can be useful, but it easily becomes a crutch. Use it sparingly.
一本在线字典可以很有用，但也容易产生依赖性，要适度使用。
One useful technique when playing an adventure game is very simple: use a dictionary.
玩冒险游戏的一项有用的技巧非常简单：使用一本字典。
I think dictionary is the most useful book, because it can teach us a lot.
我觉得字典是最有用的书本，因为它能教给我们很多知识。
Object keys is more a general feature of the XAML language, possibly useful for certain custom dictionary scenarios where creating the dictionary in XAML is desirable.
对象键是XAML语言的常规功能。对于某些要在XAML中创建词典的自定义词典方案而言，该功能很有用。
Most of my classmates think that the electronic dictionary is useful for us, for it is convenient to use and saves us a lot of time.
我大部分的同学都认为使用电子词典对我们有好处，因为电子词典使用方便，能节约很多时间。
A car and a dictionary are both useful.
汽车和字典都有用处。
This is a most useful dictionary.
这是一本非常有用的字典。
An American slang dictionary can be a very useful resource for anyone interested in learning more about how language continues to evolve throughout the United States.
我整理的一些美国俚语，都是美国很本土的口语词汇，课本上可是学不到的哦。
After you have learned to use a dictionary, it can become your most useful book.
当你知道如何使用它之后，它将成为你最有用的书本。
After you have learned to use a dictionary, it can become your most useful book.
当你知道如何使用它之后，它将成为你最有用的书本。
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