你在服用抗凝药物（比如华法林，肝素）或者抗血小板聚集药物（阿司匹林或氯吡格雷）——一般情况下，在结肠镜检前应明停止服用这些药物，以防出血不止。

Are taking any blood-thinning drugs (such as warfarin or heparin) or antiplatelet medication (such as aspirin or clopidogrel)

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着重介绍了施工中由贝雷梁和钢管支柱构成的门式支架支撑系统以及理论检算和挠度计算。

The portal supportor system is emphasized which is formed of bailey beam and steel pipe support.

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