I chose a large- finned one, pushing its shape each generation toward increasingly ornate, heavy-duty fins.

我选择了一条有着巨鳍的鱼，促使它的形状每一代都朝着越来越华丽、越结实耐用的鳍进化。

I chose a large - finned one, pushing its shape each generation toward increasingly ornate, heavy - duty fins.

我选择了一条有着巨鳍的鱼, 促使它的形状每一代都朝着越来越华丽 、 越结实耐用的鳍进化.