1 in the past, but not now: --
Going to the Olympics is a once-in-a-lifetime opportunity (= a rare and valuable one).
I went to Disney World once.
4 in the past, but not now: --
5 as soon as, or when: --
They can then be easily picked up with a small moistened paint-brush and transferred at once to the alcohol in the collecting tubes.
These relations are thus indicated twice: once for the human and once for the computer.
Once again, the stimulus will be sufficient to force the correct perception.
Thus, once the partitioning of the domain is done, the determination of the 'best' function is straightforward.
In this book several main themes are at once apparent.
Holmes once again effectively examines gendered language in the workplace and provides clear ties to current theoretical frameworks.
Rate of taper could be slowed once for every 3-day decrement if re-emergent symptoms were too severe for patients to go on.
Once determined that the intersected point belongs to visible surfaces, it is necessary to determine if the point detected is within the parallelepiped boundaries.