纖瘦

纤 = 千 + 纟 : Marie Curie (xi) finds that there are many fine (纤) silk worms (纟) in front of the anthill (a1). She wants to preserve the delicate (纤) worms and thus puts a kilo (千) on them to press and dry them.

瘦 = 叟 + 疒 : Sherlock Holmes (sh) and the old gentleman (叟) have been locked into the outhouse's bathroom (ou4) to be in quarantine for the very colorful rash (疒) they developed. Because of their sickness they already lost a lot of body weight and are very thin (瘦).