由于分配规则的限制，通常使用静态字段或其他缓存数据方式的代码会使范围不安全，可能导致IllegalAssignmentError。

Code that makes common use of static fields or other means of caching data is unsafe for scopes because of the assignment rules, which can result in an IllegalAssignmentError.

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人类免疫缺陷病毒：在全球范围内，几乎2%的艾滋病毒感染新发病例是因不安全的注射而造成的。

Human immunodeficiency virus: Globally nearly 2% of all new HIV infections are caused by unsafe injections.

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他希望其他录像制作人也能加入这个非营利性的“自行车测试”计划，然后得出一个世界范围内的不安全指数。

He hopes other videographers will join his nonprofit "Bicycle Test" project and create a worldwide insecurity index.

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