fertility

生殖能力、肥沃度

人や動物が子を持つ能力、または土地が植物を健やかに育てる力。

やさしい英語で： The ability of people or animals to have young, or of land to grow healthy plants.

• Compost improves soil fertility.
• Age can affect a woman's fertility.
• The couple discussed fertility treatment with their doctor.

類義語： fruitfulness

反対語： infertility, sterility

よく使う表現： soil fertility, fertility treatment, improve fertility

出生率

ある人口の中で赤ちゃんが生まれる割合。

やさしい英語で： The rate at which babies are born in a population.

• Fertility has fallen across the country.
• The report compares fertility rates in different regions.
• Lower fertility may lead to a smaller population.

類義語： birth rate

よく使う表現： fertility rate, declining fertility, high fertility