gastight

"I got a letter from my brother."

"The rain jacket is made of an impermeable material, so you won't get wet even in a heavy downpour. "

"The construction site was hazardous, with exposed wires and heavy machinery. "

"The juice box is a small container for the children's drinks at school. "

"The science students conducted their experiments in the school laboratory. "

"I brush my teeth regularly to prevent them from turning yellow."

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The computer technician fixed the broken printer in the school library. "

"My teacher ensured me that I would pass the test if I studied hard. "

"A lot of gas had escaped from the cylinder."

"The factory was evacuated after toxic gases escaped from a pipe."

"Traditionally, Inuit communities sealed for sustenance and survival in the Arctic. "