# -- User setup --
但毛利率跟净利润率却在跌，其中毛利率在 2021 年为 38.1%，2024 年到了 36.8%，而 2019 年毛利率为 49.74%。，更多细节参见91视频
。51吃瓜对此有专业解读
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Some people may need to use multiple Wi-Fi extenders, for instance, if your home is large or has dead zones in different areas. But if you do use multiple Wi-Fi extenders, there’s a chance of interference. You may also need to manually connect to the extenders separately, which isn’t always convenient.，更多细节参见搜狗输入法2026