unbarbed造句

• The description of barbed or unbarbed is not fully precise : there are barbs on the stings of yellowjacket wasps and the Mexican honey wasp, but the barbs are so small that the wasp can successfully withdraw her sting apparatus from victim's skin.
• The nesting habits of many " Osmia " lend themselves to easy cultivation, and a number of " Osmia " are commercially propagated in different parts of the world sting when handled, ( only under distress such as when wet or squeezed ), their sting is smaller and less painful, and their stinger is unbarbed, all attributes cited by different commercial growers.