A machine for hoisting and moving heavy objects, consisting of a movable boom equipped with cables and pulleys and connected to the base of an upright stationary beam.
分词翻译
悬的英语翻译：
dangerous; far apart; feel anxious; hang; imagine; suspend 【电】 damgling
臂的英语翻译：
arm 【医】 arm; brachia; brachio-; brachium; upper arm; upper limb
