To stop the gas from escaping and to let the acid in bit by bit.

But while Robert was eating, Bill put men outside to stop him from escaping.

He was also forced to sleep chained to his bed to stop him from escaping.

Take the brothers: they moved to the only spot the soldiers would break for and stopped any survivors from escaping to bring help.

In fact, you nearly stopped Khalil from escaping at the airport.

There he must stop several scientists from escaping back into the plastic world.

Yaz said too late to stop the word from escaping his lips.

You'll also need something to stop the CO2 from escaping at the sides.

The reason they removed shoes was so that the broken glass on the floor would stop the prisoners from escaping.

I tried to stop the blood from escaping by breathing in.