[涂料]双层油漆

doubling check───仔细检查；再次确认；两子同时将军

doubling space───n.两倍行距

bouncing back───反弹；迅速恢复活力

double back───循原路折回；往回逃跑；把…对折

doubled back───循原路折回；往回逃跑；把…对折

doubles back───循原路折回；往回逃跑；把…对折

doubling date───两对男女一起的约会

pulling back───拉回；撤回；拉为平手；反悔

rolling back───击退；把…压低到标准水平

Petrol prices in the US, after doubling last year, are now back to relatively cheap rates compared with Europe and Obama would take a big political risk by slapping on big tax rises.───与欧洲相比，美国的汽油价格自从去年涨了一倍后，现在已经回落到相对便宜的比率了。奥巴马会在快速增税方面冒个大险。

Giff leaves, not doubling back this time.───吉夫掉头走了，这次没再回来。

Tunnels and stairways have evidently been recently sacked. They are long, scruffy, dark, threatening and set about with works, and signs doubling us back where we have just come from.───地道和楼梯漫长幽暗，像是刚被洗劫过一样，而地铁站的指示标志两次把我们带回到原地。

The box gave out a constant stream of beeps as the Doctor walked, occasionally doubling back on himself.

But Vicenza was half way from Venice to Verona, so if they did that they would all be doubling back.