Rhamnus purshiana dc.
[医] 波希鼠李, 药鼠李
🧩 词语组成解析
n. [植]鼠李
🗣️ 情景例句
My parents paid my way through college.
我父母供我上大学。
I would have gone on the picnic if it hadn't rained.
如果没下雨，我就去野餐了。
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!
因此，从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。