详细解释:a. 迎风航行的
英语解释：
形容词 close-hauled:
having the sails trimmed for sailing as close to the wind as possible详细解释：
close-hauled
adv.（副词）adj.Nautical （形容词）【航海】 With sails trimmed flat for sailing as close to the wind as possible.张满帆的，迎风航行的：航行时调整船帆以便尽可能的与风保持一致的