Finally, the string type is a reference type, so every string instance refers to an additional block of memory to hold the actual string data.

最后，字符串类型是引用类型，因此每个字符串实例都引用一个附加的内存块，以存放实际的字符串数据。

youdao

The respond_to method accepts a single code block and passes one instance variable (labeled wants) into the code block.

respond _ to方法接受单个代码块，并传递一个实例变量(标为wants)到代码块。

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For example, the semantics of return, break, and this are different in a block of code than they are in a Runnable (or other inner class instance) that represents the same block of code.

比如，return、break和this在某一代码块中的语义与其在Runnable(或其他内部类实例)中同一代码块中的语义是不同的。

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The commission threatened, for instance, to block the government's recent bail-out of Alstom, an engineering group, approving a rescue plan only after France agreed to last-minute changes.

ECONOMIST: France and Europe

In essence, the PacBio machine could become a powerful molecular microscope that allows researchers to, for instance, watch drugs block enzymes and use that information to build better ones.

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The idea, for instance, that we should block millions from moving here and vastly bettering their lives because there may be a small statistical impact on some subset of us.

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