It can take several months to start working and up to a year before the full effects are known.

But the full effect of the strike will not be known for several days.

While this effect has been known for more than a century, the study produced evidence.

They said its full effect might not be known until next year's survey, which will cover 1991.

The side effects of the drug are not yet fully known.

The effects of such a new world order, if in fact it comes to pass, will not be known for quite some time.

Long-term effects of the drug on children are not yet known.

However, the full effects of these attacks is less known.

The effects of alcohol on the body are well known.

The two main effects of a cross wind on the ground run are well known.