Decorators are pure syntactic sugar—or (according to Wikipedia) "additions to the syntax of a computer language that do not affect its functionality but make it 'sweeter' for humans to use."

修饰符是一些纯粹的语法糖（syntactic sugar）— 或者（如 Wikipedia 所言）“对计算机语言语法的补充，这些补充并不影响语言的功能，而是会让语言变得更易于被人使用。”

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These aspects do not affect the quality of recommendations, but have direct influence on users' satisfaction when they use the system.

这些方面不影响推荐的质量，但是会直接影响用户对于他们使用系统的满意程度。

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Listing 2.3 demonstrates the use of comments, showing that they do not affect the processing of the program or its output.

表2.3演示了注释的使用，表明它们并不会影响程序的进行和它的输出结果。

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Many other factors that have been studied do not seem to affect the risk of breast cancer (dietary fat intake, cigarette smoking, past oral contraceptive use, exposure to electromagnetic fields).

FORBES: After 40 Years Of Research, What Do We Know About Preventing Breast Cancer?