water ballast

名词 n.
中文释义

英文释义

名词 n.
  1. A weight in the form of seawater that can be let or pumped into a ballast tank within a vessel when required. uncountable
    — Thanks to the previous experience of the chief performers, to careful preparation and rehearsal, and to perfect weather conditions, they watched in breath-bated silence the spectacle of the huge bulk moving without a hitch into position over the temporary pier caps on which it settled as water ballast was admitted to the pontoons.
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