Dichopsis
马来产古塔波胶
🗣️ 情景例句
Nothing ventured, nothing gained.
不入虎穴，焉得虎子。
Aren't they students?
他们不是学生吗？
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!
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%。