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

他提出指控毫无证据。

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

一定要先复制磁盘, 然后再关电脑。

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

她倒是一片好心, 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网，可是每次网上来只是些鲻、、齿，终于，出现了浑抖动着红鲤。

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

优计，具有温和烟熏味和多刺水果味,成熟橡木味中伴有烟叶和香草气息。

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

罗恩-阿泰斯特：罗恩-罗恩谈判起来很棘手但经常备份有有时超过限制流氓战术。

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忙，于是他获准了一个下午，可以用来去翻弄那些倒霉石头。

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刨平和达致标准厚度工作。