🧩 词语组成解析
ecological
[ˌekə'lɔdʒikəl]
adj. 生态（学）的;
🗣️ 情景例句
Beijing Hotel.
北京饭店。
I asked him if he spoke English.
我问他他是否说英语。
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。