This is the 7652nd most frequent Chinese word.
边界
Boundary; border.
In this sentence, '边界' is used to refer to territorial boundaries between nations.
人们对国家的边界非常重视。
People place great importance on national borders.
Here, '边界' metaphorically represents personal boundaries in social interactions.
在关系中设定适当的边界是健康的。
Establishing appropriate boundaries in relationships is healthy.
In this sentence, '边界' describes physical boundaries of natural features, specifically the shifting edges of the ocean.