1 . not usual
not usual or common or ordinary ., 不平常, 不普通或者不平凡.
2 . uncommonness
English - Chinese Free Di... ... uncommon = 稀有 uncommonness = 不平常uncommunicative = 不愛說話.
3 . not uncommon
Haemorrhage is not uncommon after circumcision ., 出血不在割禮以后是不平常的.
4 . not common fo
it is not common fo him to receive leters ., 他接信是不平常的.