Two and a half meters below its waterline, there gaped a symmetrical gash in the shape of an isosceles triangle.

在船身吃水线下两米半的地方，露出一个很规则的等边三角形的缺口。

It was an adult, as could be seen from the six rows of teeth forming an isosceles triangle in its upper jaw.

这是一条成年的鲨鱼，从它嘴里，在上颚上，有摆成等边三角形的六排牙齿，就可以看出来。

They were tired of learning isosceles triangles, isotopes and writing in italics.

他们厌倦了学习等腰三角形，同位素和书写斜体字。