Before staring on a sea voyage, prudent navigators learn the sea charts, study the sailing directions, and memorize lighthouse[] s to prepare themselves for any conditions they might encounter.是什么意思_Before staring on a sea voyage, prudent navigators learn the sea charts, study the sailing directions, and memorize lighthouse[] s to prepare themselves for any conditions they might encounter.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句