Malthusism
n. 人口论
🗣️ 情景例句
Before a long trip I always give my car a safety check.
远行之前，我总是会对车子进行安全检查。
We never know the worth of water till the well is dry.
井干方知水可贵。
I like looking after my sister's baby, but my sister doesn't let me do it.
我喜欢照看我姐姐的孩子，但我姐姐却不让我做这事。