are

2047 篇文章
Vast areas of our ocean are yet to be explored.
9 0 3

Vast areas of our ocean are yet to be explored. 海洋中还有广阔的区域尚未探索

The least known parts of it are its great depths.
9 0 2

The least known parts of it are its great depths. 这之中最不为人知的区域是海洋深处

This family are the only orca known to hunt rays like this...
9 0 2

This family are the only orca known to hunt rays like this... 这一家子是已知的虎鲸群中 唯一用这种方式捕猎蝠鲼的

..and they are lethally efficient.
9 0 2

..and they are lethally efficient. 而且效率十分之高

The young orca are quick to catch on.
9 0 3

The young orca are quick to catch on. 年轻的虎鲸理解的很快

The rays are surrounded.
9 0 3

The rays are surrounded. 蝠鲼群被包围了

The rays are fast and can outmanoeuvre an orca.
9 0 1

The rays are fast and can outmanoeuvre an orca. 蝠鲼的速度很快 甚至快于虎鲸

Other creatures, however, are also listening.
9 0 3

Other creatures, however, are also listening. 然而 听到声音的还有其他生物

Columbus crabs are not good swimmers, so this male is marooned.
9 0 4

Columbus crabs are not good swimmers, so this male is marooned. 哥伦布蟹并不擅长游泳 因此这只雄蟹走投无路

But some animals are learning
9 0 2

But some animals are learning 但有些动物在学习