CubeSat researchers suggest that now's the time to ponder unexpected and unintended possible consequences of more people than ever having access to their own small slice of space.
2019年6月六级真题(第三套)阅读 Section B
柯林斯高阶英汉双解学习词典释义
VERB
思索;考虑
If you ponder something, you think about it carefully.
"I mulled over the events of the afternoon""philosophers have speculated on the question of God for thousands of years""The scientist must stop to observe and start to excogitate"