n. 蓝色;[复数](美国海、陆、空三军穿的)蓝色制服;蓝颜料;[the blue(s)][用作单数或复数]布鲁斯(歌曲)(一种伤感的美国黑人民歌);
adj. 蓝色的;沮丧的,忧郁的;下流的;
vt. 把…染成蓝色;使成蓝色;给…用上蓝剂;用上蓝剂于;
vi. 变成蓝色,呈蓝色;
🗣️ 情景例句
Yes, I know that.
是的 ,我知道。
Are there reserved seats on the train?
车上有预订座位吗?
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!