Gemi
abbr. grating efficiency measurement instrument 光栅效率测量设备
🗣️ 情景例句
this weekend?
这个周末？
You were here in February,weren't you?
二月份你曾在这里，对不对？
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。