But the Yankees' offense has been mass-producing runs and Rivera has been needed only once in the past four games.
Despite DP World's assurances that major dredging work will be needed only once, the fishermen fear that shifting sandbanks will silt the channel, making repeated intensive dredging necessary, with repeated damage.
This side information is needed only once and hence can be communicated the same time when the codebooks are told to the receivers.
The HPV test is needed only once every three years because the test is so accurate and most women fight off HPV infections on their own.
Even though it's needed only once per boot, it's still a nuisance and we'll be fixing that ASAP.
According to the manufacturer, calibration based on CO measured by lithium dilution or every other validated CO method is needed only once every 8 hours.
A bullet need happen only once, but for peace to work we need to be reminded of its existence again and again and again.
Some dogs need brushing once a day, while others may need brushing only once every two weeks.
Congress need only act once to protect our future.
You need only unpack once and, if you choose a "no-fly" cruise, need not risk being instructed to undress by an airport security official.
