Sentence examples for are seldom possible from inspiring English sources

The reason is that such predictions almost always require randomized controlled experiments, which are seldom possible when people are involved.

This approach makes ALA dosing difficult and delivery to demanding areas, such as the vulval, perineal and perianal skin, are seldom possible.

The retrospective observational design has inherent weaknesses, but prospectively controlled trials are seldom possible.

Ideally, a combination of short-term intensive follow-up and long-term watch-and-wait investigations are required to fully understand the natural history of cancer-associated infections, but the latter investigations are seldom possible.

Foe is friend and friend is foe, and it is seldom possible to tell the two apart.

In the case of a mass catastrophe like an airplane crash, it is seldom possible to identify 100percentt of the victims accurately.

Such inferences are indispensable, given that it is seldom possible to sample all the members of a given class of things.

Because the exact date of ovulation is usually not known, it is seldom possible to make an accurate estimate of the date of delivery.

Monocot stems (e.g., lilacs, orchids) do not possess a continuous cambium layer or increase in thickness; grafting is seldom possible.

I have asked at nurseries but no one has ever seen such a bush. A. It is seldom possible to identify lilacs from short descriptions, but the white edges make this one easy.

Indeed in the affairs of man it is seldom possible to predict when the tipping point will come, when that proverbial last straw will prove too much for the camel's backbone to bear, although it might have been clear for a long time that the camel was over-loaded.