able to be used or to operate on both sides 双面:可在两侧使用或操作 double-sided sticky tape 双面胶带 Automatic double-sided printing saves paper. 自动双面打印节省纸张。 I use this double-sided scanner to scan in paper documents quickly. 我用这台双面扫描仪快速扫描纸质文件。 a double-sided poster 双面海报