traveling block

基本解释

The derrickman or a floorman, secured with a safety harness, attach the dedicated hanging line to the traveling block or the top drive.
系着安全带的井架工或钻工，把专用的悬吊绳挂在游车上或顶驱上。
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This reeling out and in of the drilling line causes the traveling block, and whatever may be hanging underneath it, to be lowered into or raised out of the wellbore.
这种钢丝绳沿滚筒松开和缠绕引起游动滑车从井眼内下降或上升，无论游动滑车下面悬挂的是什么东西。
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The driller slowly picks up the traveling block or top drive and the derrickman or a floorman release the designated hanging line and secure it safely out of the way.
司钻慢慢的上提游车或顶驱，由井架工或是一个钻工把专用悬吊绳摘掉，把它绑到安全位置。
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Block has been traveling regularly to Beijing for the past 17 years, starting in 1991, when he became chairman and president of Revlon International.
FORBES: My Beijing
For many, Thanksgiving is all about traveling home to be with loved ones, so to mark the holiday, Melissa Block travels to Nashville to hear country-inflected singer-songwriter Kim Richey and her band perform songs about home, travel and love.
NPR: At Home in Nashville with Kim Richey