After Oxford the countryside flattens out.

过了牛津以远乡村逐渐平坦。

She flattened out the crumpled letter on the desk.

她在写字台上把皱巴巴的信展平。

The hills flatten out here.

山到了得平坦了。

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

皱了的绸子，你如果下，可以平的。

Martin fllass="key">attened a book out in front of him.

马丁在面前本书。

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

当样本放在面，特别插角使袋子底部平，袋子便直立了。

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.

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