A class or struct may have instance fields or static fields or both.

类或结构可以拥有实例字段或静态字段，或同时拥有两者。

youdao

Almost any change you make that involves a class's instance fields has some impact on serialization.

几乎所有更改都会涉及对串行化有某种影响的一个类的实例字段。

youdao

Inner classes can refer to mutable instance fields if the inner-class expression occurs in an instance context, but this is not the same thing.

如果内部类表达式出现在某个实例上下文中的话，内部类可以引用可变的实例域instance field，但这不是同一回事。

youdao

So inside of an instance, associated with an instance, we have both methods and fields.

还有一些内部变量，实际上我该这么说，我们通常把这些东西称为域。

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One proposal, for instance, involves using large, awkward magnetic fields to cool the electrons down.

ECONOMIST: Microelectronics

Their size allows them to specialise in niche activities for instance, pumping out the last drips of oil from mature fields which giant firms tend to avoid because they take up so much management time.

ECONOMIST: Small oil firms

For instance, they could play a huge role in elder care and other health fields.

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