Complementariness
补充性
🗣️ 情景例句
and he kept talking about having a house of our own.
他老说要有自己的家。
Geographically,this country is located in the southern hemisphere.
这个国家在地理上位于南半球。
No two sorts of birds practise quite the same sort of flight;
没有任何两种鸟的飞行方式是相同的。