rarefy

"The park rangers warned the hikers about the possibility of encountering bears on the trail. "

"The intricate making of the model airplane showcased the student's skill. "

"As the altitude increases, the temperature gets lower, so remember to bring warm clothes to the mountains."

"Prices climbed steeply."

"Concrete is porous, so water will slowly filter through it."

"The balloon rose high in the sky.   The wall was high.   a high mountain"

"The teacher enlarged the map so everyone in the class could see the details better. "

"We spent the weekend hiking in the mountains."

"Before the big presentation, Sarah took a deep breath and felt more calm. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"The recipe called for a specific portion of flour, not the entire bag. "

"The school is located just outside the town, without the main shopping area. "