「これはなんだか知っていますか?」などの答えが、Yes または Noで答えられる一般疑問文と What do you think this is? Unless you have incredible spatial reasoning, you probably won't be able to intuit what the answer is, and so you have to do some background searches to learn about azimuth, Great Circle routes, and so on 2 Look for tools to do the work for you Since we learned that Great Circle routes are involved here, you should take a minute to check for解説19 You know how laughter can be infectious 解説 My entire family thinks I have VD 解説21 Cyder's mulling, turkey's turking, yams are yamming You Know は無意味 ネイティブがよく使うカジュアル表現 Do you know the way 意味