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rheumatism - n. a disease that causes stiffness and pain in the muscles and swelling and pain in the joints
emerge - v. to rise or appear from a hidden or unknown place or condition
lumber - n. wooden boards or logs that have been sawed and cut for use
exposure - n. the fact or condition of being affected by something or experiencing something
elaborate - adj. made or done with great care or with much detail
creek - n. a small stream
trough - n. a long, shallow container
