flatten out

She flattened out the crumpled letter on the desk.

她在写字台上把皱巴巴信展平。

After Oxford the countryside flattens out.

过牛津以远乡村逐渐平坦。

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

皱子，你如果熨下，可以变平。

Martin flattened a book out in front of him.

马丁在面前摊开本书。

The hills flatten out here.

山到这里变得平坦。

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，角使袋子底部变平，袋子便直立。

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.

另方面，费德勒时常能击致命，这在于他能够击出平击球或者上旋球，球势格外沉，令人难以回防。