One type of pattern was of a specific density and was to be classified as dense, while the second type of pattern could vary in density, but was always lessdense than the first one.
一种图案具有特定的密集度,被归为“密集”类,另一类图案的密集程度不同,但都比第一种的密集程度低。
2
Lessdense substances move upwards to form a crust.
密度小的物质向上浮动并形成一层皮。
《牛津词典》
3
Less salty surface waters would be lessdense and therefore less likely to sink and stir up deep water.