flatten out

She flattened out the crumpled letter on the desk.

她在写字台上把皱巴巴的信展。

The wrinkled silk will flatten out again if you iron it.

皱了的绸，果熨一下，可以的。

Martin flattened a book out in front of him.

马丁在面前摊开一本书。

After Oxford the countryside flattens out.

过了牛津以远乡村逐坦。

The hills flatten out here.

山到了这里得坦了。

When the sample is placed inside, the special gusseted bottom flattens out, allowing the bag to stand up on its own.

当样本放在里面，特别插角使底部，便直立了。

And at the other end, lay one in short – and the point is over, Federer able to flatten it out, or lace it with topspin, the ball exceptionally heavy and often unreturnable.

另一方面，费德勒时常能一击致命，这在于他能够击出击球或者上旋球，球势格外的沉，令人难以回防。