You can hire a freelance website tester or a company that specializes in website usability.
你可以雇佣一名自由职业的网站测试员，或者由专门的公司来对网站的可用性进行测试。
The ISO 9241 standard defines website usability as the “effectiveness, efficiency and satisfaction with which specified users achieve specified goals in particular environments.
ISO 9241标准中对网站可用性的定义是：特定用户在特定环境下，能够快速、有效且满意地完成特定的目标。
The ISO 9241 standard defines website usability as the "effectiveness, efficiency and satisfaction with which specified users achieve specified goals in particular environments."
ISO 9241标准中对网站可用性的定义是：特定用户在特定环境下，能够快速、有效且满意地完成特定的目标。
Second usability Tests: Ratings of website usability after only 5 seconds are the same as those after 10 minutes.
五秒钟可用性测试：仅花5秒钟测试时间就对网站可用性进行评分，结果跟10分钟的测试结果一样。
Second usability Tests: Ratings of website usability after only 5 seconds are the same as those after 10 minutes.
五秒钟可用性测试：仅花5秒钟测试时间就对网站可用性进行评分，结果跟10分钟的测试结果一样。
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