insubstantial：非实体的，不坚固的

in-,不，非，substantial,结实的，牢固的，实体的。

• picture
• picturesque
• picturize
• piddle
• piddling
• pidgin
• pie
• piebald
• piece
• piece de resistance
• piecemeal
• piece of eight
• piecework
• pied
• pied-a-terre
• Pied Piper
• pie-eyed
• pier
• pierce
• piercing
• Pierian spring
• Pierre
• Pierrot
• pieta
• pietism