现在，已经发现地球上有完全黑暗的地方，比如海洋下方数英里的洞穴。

Now, places have been found on earth that are in total blackness, such as caves several miles beneath the ocean.

youdao

但是现在，已经发现在地球上存在完全黑暗的地方，比如海洋下面几英里的洞穴里。

But now, places have been found on earth that are in total blackness, such as caves several miles beneath the ocean.

youdao

必须在一间完全黑暗的房间中才能看到血迹。

You have to have the room completely dark to see the blood.

youdao