main-mast
n.
"the tallest mast, usually located near the center of the ship," 16c., from main, adj. + mast, n.1.
| 词汇 | main-mast | 
| 词根词缀 | Online Etymology Dictionary main-mast n. "the tallest mast, usually located near the center of the ship," 16c., from main, adj. + mast, n.1. | 
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