Microlensing
微引力透镜
🗣️ 情景例句
and having lunch with you today.
与你一起吃中餐。
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
During a second trip to the USA in 1912.
在1912年第二次赴美期间。