they created obstacles
他们制造了障碍
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It has always baffled me that councils feel that they should put obstacles on roads which were created for the specific purpose of conveying traffic.
BBC: NEWS | UK | Scotland | Campaign to end speed bump 'pain'
Lack of resources and budgetary limitations as well as the special circumstances of prisons and detention centres have always created obstacles for prison libraries to run as efficiently as they should.
UNESCO: M��nster Prison Library
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