Having multiple backup systems in place can help prevent single points of failure.

She used single quotes to emphasize the importance of her words.

Many single parents struggle to balance work and childcare.

Single parents juggle multiple responsibilities.

The road is full of single curves.

I enjoy trying different single malts from Scotland.

I enjoy trying different single malt whiskies from Scotland.

The company has signed multiple single union agreements with different labor unions.

Single-strand binding proteins stabilize single-stranded DNA during replication.

Single-ply membranes are commonly used in roofing systems.