第 3 單元，第 2 課
Human Population Growth人口成長
點卡片翻面。
1 / 5
- population族群（人口）The town’s population doubled in 30 years.
- immigration移入Immigration added thousands of people to the city.
- emigration移出Emigration lowered the village population.
- age structure年齡結構The age structure shows many young people.
- carrying capacity負載量The island reached its carrying capacity.
這課的重點字
- population族群（人口）
- immigration移入
- emigration移出
- age structure年齡結構
- carrying capacity負載量