As mentioned, the stones in the track ballast have a characteristic shape, size and texture.

如前所述，轨道道砟中的石子有其独特的形状、大小和纹理。

Microscopic examination can show tumor cells with a characteristic abnormal elongated shape, called spindle cells.

镜检可看到典型的异常细长形状的肿瘤细胞，叫做梭形细胞。

Some are anatomical, such as a characteristic face shape.

有些是解剖学上的，例如特征脸型。

Each of these characters embodies unique traits and characteristics, shaping the family's destiny and the town's future.

这些人物中的每一个都体现出独特的特质和特点，塑造着家族的命运和小镇的未来。

Each protein folds to its characteristic shape each time, and the folding process takes just a fraction of a second.

每种蛋白质每次都会折叠成其特有的形状，折叠过程只需几分之一秒。