线形纲

Any of numerous chiefly marine carnivorous fishes of the class Chondrichthyes, which are sometimes large and voracious and have a streamlined, torpedolike body, five to seven gill openings on each side of the head, a large oil-filled liver, a cartilaginous skeleton, and tough skin covered with small toothlike scales.

中文翻译：鲨鱼任一种软骨鱼纲的海生食肉鱼，有的体形巨大、贪婪并呈流线形，有鱼雷状躯体，头的侧面各有五至七个鳃孔，并生有一个大的富有油脂的肝脏，一个软骨骨架和覆盖有小齿状鳞片的坚韧表皮

Any of numerous chiefly marine carnivorous fishes of the class Chondrichthyes, which are sometimes large and voracious and have a streamlined, torpedolike body, five to seven gill openings on each side of the head, a large oil-filled liver, a cartilaginous skeleton, and tough skin covered with small toothlike scales.

鲨鱼：任一种软骨鱼纲的海生食肉鱼，有的体形巨大、贪婪并呈流线形，有鱼雷状躯体，头的侧面各有五至七个鳃孔，并生有一个大的富有油脂的肝脏，一个软骨骨架和覆盖有小齿状鳞片的坚韧表皮 A person regarded as ruthless， greedy， or dishonest。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。