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.
系著安全帶的井架工或鑽工，把專用的懸吊繩掛在遊車上或頂敺上。
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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.
這種鋼絲繩沿滾筒松開和纏繞引起遊動滑車從井眼內下降或上陞，無論遊動滑車下麪懸掛的是什麽東西。
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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.
司鑽慢慢的上提遊車或頂敺，由井架工或是一個鑽工把專用懸吊繩摘掉，把它綁到安全位置。
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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