Though the sea is rich in resources, it is still very difficult for men to work under the ocean.

尽管海里资源丰富，让人们在海下工作还是非常困难的。

youdao

Though the sea is rich in resources, it is still very difficult for men to work under the ocean.

尽管海里资源丰富，让人们在海下工作还是非常困难的。

youdao