（一）玻璃身子橡皮头，苗条身段尖溜溜；大量收购再零售，进出都从一个口c（二）圆圆直直玻璃筒，身上刻度好分明；只限常温量液体，简要直来眼要平。（三）透明玻璃小喇叭，只知工作不说话；口里含上一张纸，能使固液两分家。（四）形似葫芦底却平，导管活栓与外通；开门肚里 (A) The glass body rubber head, slender body lean; a large number of acquisitions and then retail, access to a straight round glass cylinder from c (b), the body scale is good; only the normal temperature liquid, briefly straight to the eye level. (C) Clear glass trumpet, only knowing that the work does not speak; containing a piece of paper in the mouth, can make the two points separated. (4) It resembles a gourd at the end but is flat, with a catheter live-bolt and external passage;