"Measure the size of a cloud in a bottle with a ruler. 'I want to measure a cloud...' Stare through the hole in the bottle. 'I want to measure my eye...' Measure my eye peering through the bottle."
Overview："Measure the size of a cloud in a bottle with a ruler. 'I want to measure a cloud...' Stare through the hole in the bottle. 'I want to measure my eye...' Measure my eye peering through the bottle."
