vi. 飘动;鼓翼;
vt.& vi. 振翼,拍翅膀;烦扰,坐立不安;(旗帜)飘扬;
n. 紧张,激动不安;颤振;飘扬;(身体部分的)病态阵跳;
flutt+er(动词后缀)→摆动;鼓翼
🗣️ 情景例句
He's really cute.
他真是逗人喜爱。
Not really, I'm afraid. We were delayed taking off, and we encountered a lot of bad weather.
不太好,我们起飞延误了,还遭遇了恶劣的气候。
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!