It appeared in English about the same time as pest, just a little earlier, and at first meant to entangle or to set up a barrier to progress.
它和pest大约在同一时间出现在英语当中，还要稍微更早一些，一开始的意思是“缠绕”或者“设置障碍阻挠进程”。
For others, they are stifling and a barrier to social progress.
但对其他国家来说，又是社会进步的阻碍。
For others, they are stifling and a barrier to social progress.
但对其他国家来说，又是社会进步的阻碍。
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