Arth
abbr. arithmetic 算术，计算，算术的
🗣️ 情景例句
What's wrong?
什么病
You can never tell about this sort of thing.
这种事谁也说不准。
By this time, a Lancaster bomber in reasonable condition was rare and worth rescuing.
到了那个时候，状况良好的兰开斯特轰炸机实属罕见，值得抢救。