He turned back to make a double check.
他回过身来，做一个双止回阀。
You'd better make a double check with your answer.
你最好再核对一下答案。
There are still a few mistakes in this article. You have to make a double check.
文章中还有一些错误，你必须进行第二次校对。
Making them too stringent (a mistake I tend to make; I always have to double-check myself).
设计的模式过于严格(我常犯这样的错误，不得不仔细检查)。
You can make each column bar or line marker a different color by double-clicking a marker and then selecting the vary colors by point check box on the options tab.
双击数据标记，然后在“选项”选项卡中选择“依数据点分色”选项，可以为各个数据标记配以不同颜色。
Prior to using wefted hair, double check for looseness and make corrections by sewing through or applying a proper adhesive to loose parts. This helps to prevent shedding.
使用前，仔细检查是否疏松，如疏松，可应用适当的粘合剂或以线缝更正。这有助于防止发丝脱落。
You can make each column, bar, or line marker a different color by double-clicking a marker and then selecting the Vary Colors By Point check box on the Options tab.
双击数据标记，然后在“选项”选项卡中选择“依数据点分色”选项，可以为各个数据标记配以不同颜色。
A safe place should be picked when doing welding work. Before implementing, double check the surrounding area, make sure flammable object is not around, or separate and wet the flammable objects.
焊割作业要选择合适地点，作业前要仔细检查，周围的可燃物必须清除，如不能清除时，应采取浇湿、遮隔等措施加以防护。
A safe place should be picked when doing welding work. Before implementing, double check the surrounding area, make sure flammable object is not around, or separate and wet the flammable objects.
焊割作业要选择合适地点，作业前要仔细检查，周围的可燃物必须清除，如不能清除时，应采取浇湿、遮隔等措施加以防护。
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