Các câu ví dụ cho từ boundary

1. "However, our findings were that therian mammals, the ancestors of most modern mammals, were already diversifying considerably before the Cretaceous-Tertiary extinction event," also known as the K-Pg boundary.

2. An analysis of hundreds of molars from mammals alive during the 20 million years before the K-Pg boundary revealed a huge variety of shapes, a telltale sign of varied diets and species diversity.

3. " Once again, teeth told a story, this time revealing which mammals made it across the K-Pg boundary, and which did not.

4. "But he said there should be no gender boundary for skincare and beauty products.

5. Vietnam and China agreed on an equal split of the maritime boundary of the Gulf of Tonkin in 2000.