• 1. Obstructions: 妨碍物
• 2. Approach to obstructions: 近障碍物线
• 3. Temporary Immovable Obstructions: 临时不可移动之阻碍物

更多释义

• 1.It is my job to make sure that all pathways are clear of obstructions.
  保证所有的道路通畅是我的职责。
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• 2.If all the coronary arteries are free of significant obstructions, all parts of the heart will receive equal amounts of oxygen.
  如果冠状动脉没有重大堵塞，心脏的各个部位会收到等量的氧气。
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• 3.Obstructions of this sort make it all the harder to settle other essential matters swiftly.
  类似这样的障碍使迅速解决其它重要事项更加困难。
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