Sgr
abbr. 无铀伽马；钠石墨反应堆（Sodium Graphite Reactor）
🗣️ 情景例句
I'm wiped out by the time I get off work.
下班时，我都累趴下了。
May I see a timetable?
我可以看时刻表吗？
They were in fashion last year and the year before last.But they're not in fashion this year.
这鞋在去年和前年时兴，而今年已不流行了。