Maybe you need an extra hand?

或许你缺了只手吧？

youdao

I brought some canned food and... an extra hand.

我带来一些罐头食品…和一双有空的手。

youdao

And what about those of us who could just occasionally use an extra hand?

那么我们这些会偶尔用到额外的手的人呢？

youdao

Tables and seats have redundant attachments and an extra person is on hand at each meal to enforce strict procedures.

WSJ: High Table: Diners Dangle From Crane

Some are offering you an extra 10 percent if you hand it over to convert into a gift card.

NPR: Retailers Hope to Get a Piece of Taxpayer Rebates

Made from personally selected blue agave plants, multiple distilled with pure spring water, it gets its platinum color from ultra-modern filtration, and is finished by hand with an extra anejo tequila which has rested in oak barrels for five years to enhance the flavor.

FORBES: Cult Hit Casa Dragones - Today's Tastemakers' Top Tequila