Why can't the captain of a vessel keep a memorandum of the weight of his anchor, instead of weighing it every time he leaves port?
为什么船长不会把锚的重量记下来，省得每次出港都要称一称它呢？
Why can't the captain of a vessel keep a memorandum of the weight of his anchor, instead of weighing it every time he leaves port?
为什么船长不会把锚的重量记下来，省得每次出港都要称一称它呢？
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