velum

"I stretched the rubber band until it almost broke."

"She was accessory to the riot."

"We canceled the school picnic when we saw a large cumulonimbus forming in the sky, because those clouds often bring thunderstorms. "

"The student was partially prepared for the exam, but still felt nervous. "

"The twins resemble each other."

"She carefully handled the delicate, lace-trimmed lingerie. "

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

"He covered the baby with a blanket."

"The cell membrane controls what enters and leaves the cell. "

"Our company associated with a local charity to help raise money for their programs. "

"The heavy fog was obscuring the view of the mountains. "

"The company is extending its office hours to better serve customers. "