英语谜，高手请猜猜看。不难

来猜猜吧！正确有奖哦！

There's a box somewhere,

Which I wont tell you.

But its open at D

And closes at E.

★Stay where you are,

Or you will sink.

Its soft but dangerous.

And its yellow.

Try to move

Then you will sink,

Faster than you didnt.

星星`流沙`沙漏?= -

星星

流沙