“once available”可以造什么句，once available造句

For instance, consider that only a handful of varieties of potatoes dominate the current marketplace, whereas thousands of varieties were once available.

The plentiful supply of land once available to settlers moving west is one ational gains are another.

Those cars are safer, last longer and are loaded with technology and features once available exclusively to the wealthiest buyers of luxury cars - from antilock brakes to GPS navigation systems.