Macrograin
粗[宏观]晶粒
🗣️ 情景例句
When you learn a new verb, learn its various forms.
学到了新动词时，记住它的各种形式。
How much?How many?
共多少？
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%。