... 注2:“关闭”对固定式防护装置来说是“保持在应有的位置"o 固定式防护装置 fixed guard 封闭式防护装置 enclosing guard ...
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fixed-guard 固定防护装置
fixed distance guard 固定间距的护罩
FIXED BARRIER GUARD 固定式防护围栅
Still his father said nothing, his eyes fixed on the view like a soldier on guard duty, determined not to miss the signal flare sent up by a savage tribe on a distant hill.
NEWYORKER: Town of Cats
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