一种由一连串浮木连着别的自由浮木而成的障碍物，特别用于拦截漂浮残骸或阻止通行。
A barrier composed of a chain of floating logs enclosing other free-floating logs, typically used to catch floating debris or to obstruct passage.
心理障碍是平衡木教学中客观存在的事实。
Psychological hindrance is an objective fact existing in physical education.
英国商人手持木枪和长矛柄进行操练，海边也到处设置着临时搭建的障碍物，到处能见到古旧的武器。
British businessmen drilled with wooden guns and pikestaffs. The beaches and coasts bristled with improvised obstacles and antique weapons.
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