family and genera的用法和樣例：
例句
- The few-species families and few-species genera had a larger quantity than the big ones.
井岡山藤本植物科屬組成中，寡種科和寡種屬較多，大種科和大種屬較少。 - The total number of family and genera increased gradually as succession proceeded, and Gramineae were dominant species at all time.
在科屬總數上，科屬數隨演替逐漸增加，其中，禾本科植物始終處于優(yōu)勢種地位。
