He made the accusations without a shred of evidence to back them up.

他提出的指控毫无证据。

Make sure you back up the disk before you turn the computer off.

定要先复制磁盘, 然后再关电脑。

She is well-intentioned, but her tactless manner tends to get people's backs up.

她倒好心, 但方法不当容易使人生气。

Samphire Starboard lowered fishing nets and pulled them back up full of gurnard, sturgeon, and dentex.

巴奇钦·特里波尔多立即撒下鱼网，可每次网上来的只些鲻鱼、鲟鱼、利齿鱼，终于，出现了浑抖动着的红鲤鱼。

Well structured wine with soft, smoky, brambly fruit backed up by tobaccoey, vanilla laced oak character flavours.

优良的设计，具有温和的烟熏味和多刺水果味,成熟的橡木味中伴有烟叶和香草的气息。

Ron Artest: Ron-Ron talks tough but usually backs up his boasts with sometimes over-the-top bullyboy tactics.

-阿泰斯特：-判起来很棘手但经常备份有有时超过限制的流氓战术。

Aunt Tranter backed him up, and he was accordingly granted an afternoon for his " wretched grubbing" among the stones.

特兰特姨妈这次帮了他的忙，于他获准了个下午，可以用来去翻弄那些倒霉的石头。

Back planning: Finishing operation to the back of a stereotype or an electrotype after backing up to make it smooth and to the required height.

铅铸版或电铸版在背后所需的刨平和达致标准厚度的工作。