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单词
ball signal
释义
ball signal
noun
:
an object like a ball hoisted manually to the top of a track-side pole in early railroading to indicate that the way was clear for an approaching train
— compare highball
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barde
barde
bardee
bardic
bardie
bardiglio
barding
bar ditch
bardlet
bardling
bardo
bardolater
bardolatrist
bardolatry
bardolino
bardship
bardy
bardé
bare
bare
magnetic chart
magnetic chuck
magnetic circuit
magnetic clutch
magnetic compass
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更新时间:2026/3/18 11:15:53