Merchantmen
n. 商船, 商人( merchantman的名詞復數 )
??? 情景例句
When people stand together, no one can stop them.
當人們門到一起的時候，就沒有人可以阻止他們相互談論。
This stain is really stubborn.
這污垢去不掉。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
從測定海深到測定魚群，這一進展比較容易。