This substance, left unchecked or undiluted would kill your fish.

Our people are projecting that left unchecked, his group will grow to become the largest and best organized we've ever encountered.

Had it been left unchecked, she could have caused a massive outbreak of trichinosis.

Yet his life became the material for the bureaucratic processes that, left unchecked, grind on forever.

The good feeling is that if this were left unchecked, it has the potential to bankrupt the company.

Others, however, fear that the dollar's decline, left unchecked, could have a detrimental impact on the worldwide economy.

It said that consumption, left unchecked, would rise 50 percent by 2030, and that could lead to a significant increase in price.

And a spell left unchecked can cause chaos, believe me.

These could cause problems that, left unchecked, could affect its structural integrity.

However, one would expect severe effects on the condition of the colony if reproductive workers were left unchecked.