1.

1. These obstructions could take some weeks to clear from these canals.
    这些障碍物可能要花几周时间才能从运河中清除掉。

1. 障碍：我可以证明出高H : 从我们的观点看, 在高维可积系统中, 其障碍(obstruction) 总是在於该逆散射系数(in-W : 我们想知道, 双重汉米尔顿结构(bi-Hamiltonian) 方法和可积系统的其它方法之间有何正则奇异点(regular singular points) 的条件全都是数学物理里常见的古典函数.

2. obstruction是什么意思

2. 阻塞：因而判断COPD患者病情的严重程度不能仅以肺功能(FEV1.0)为标准,Celli等(2)提出的BODE指数,包括体重指数(BMI)、气流阻塞(Obstruction)、呼吸困难(Dyspnea)、运动能力(Exercise),更能预测患者的死亡率,全面反映COPD患者呼吸及系统性特征.

1. 路障；障碍（物）
    An obstruction is something that blocks a road or path.

    e.g. John was irritated by drivers parking near his house and causing an obstruction.
           约翰对那些在他家附近泊车堵住通道的司机感到恼火。

2. （体内的）梗阻
    An obstruction is something that blocks a passage in your body.

    e.g. The boy was suffering from a bowel obstruction and he died.
           这个男孩因患肠梗阻死去了。

3. （通常指对生意、法律或政府的）阻挠，妨碍
    Obstruction is the act of deliberately delaying something or preventing something from happening, usually in business, law, or government.

    e.g. Mr Guest refused to let them in and now faces a criminal charge of obstruction.
           格斯特先生因为将他们拒之门外，现在面临妨碍公务的刑事指控。

1. getting in someone''s way

2. the act of obstructing

    e.g. obstruction of justice

3. any structure that makes progress difficult

    Synonym: obstructorobstructerimpedimentimpedimenta

4. something immaterial that stands in the way and must be circumvented or surmounted

    e.g. lack of imagination is an obstacle to one''s advancement
           the poverty of a district is an obstacle to good education
           the filibuster was a major obstruction to the success of their plan

    Synonym: obstacle

5. the physical condition of blocking or filling a passage with an obstruction

    Synonym: blockage