例句與造句

1. There may also be a third " spare parts " server that has running spare components for " hot " switching to prevent downtime.
2. The AN / PRC-6 circuit used 13 vacuum tubes ( receiver and transmitter ); a second set of 13 tubes was supplied with the unit as running spares.
3. It's difficult to find running spares in a sentence. 用running spares造句挺難的