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const n = position.length;
，这一点在safew官方版本下载中也有详细论述
安装完成后，验证 CLI 是否正确注册到系统路径：
Spending on GP services will increase by nearly £500 million - a 3.6% boost in cash terms - to help pay for the commitment, which the government said will be used to help recruit more doctors.