例句與造句

1. Or there was an air - raid exercise , or a new weapon was being tested
   .或者有防空演習，或者在試驗新武器。
2. . . . or there was an air - raid exercise , or a new weapon was being tested
   . .或者有防空演習，或者在試驗新武器。
3. It's difficult to find raid exercise in a sentence. 用raid exercise造句挺難的