counterweights

"The drawbridge was raised to prevent the enemy from crossing the moat surrounding the castle. "

"The insurance policy covered all the movables in the apartment, including the furniture, electronics, and personal belongings. "

"The new pedestrian bridges over the busy highway make it safer for students to walk to school. "

"The sudden lowering of her brow signaled her displeasure with the messy room. "

"The tall building has four elevators to help people reach the higher floors quickly. "

"The bird's nest was a concrete example of how strong and carefully constructed things can be. "

"The student's opposition to the new school rules caused a disruption. "

"The student recited the poem mechanically, without any emotion or understanding. "

"When his mother said he couldn't go to the party, Michael lowered, making it clear he was unhappy. "

"to reduce weight, speed, heat, expenses, price, personnel etc."

"The teacher gave a good example of a sentence using the past tense. "

"to raise your hand if you want to say something; to raise your walking stick to defend yourself"