downcast /'daunkɑ:st/ 托福英语词汇 📖 中文释义 a. 气馁的, 沮丧的 🔵 同义词dejectedbluedispiritedlowdowndownhearteddepressedlow-spirited 📘 English Definition(英文释义) n. a ventilation shaft through which air enters a mines. directed downward ← downburst D 字母词表 downchange →