n. 价钱,代价;花费,费用;牺牲;[用复数][法律]诉讼费;
vi. 价钱为,花费;估计成本;
vt. 付出代价;估价;使丧失;使付出努力;
🗣️ 情景例句
We want to keep customers happy.
我们必须让顾客满意。
Is it far?
远吗?
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!