potassiumlike类钾的potassiumn.钾potassium fluoscandate氟钪酸钾potassium sulfocyanide硫氰酸钾potassium ferrocyanide亚铁氰化钾,黄血盐potassium fluoroborate[化] 氟硼酸钾Potassium supply level供K水平potassium perruthenate高钌酸钾Potassium Penicillin S青霉素S钾[青霉素类抗生素]potassium zinc cyanide钾锌氰化物,氰化钾锌potassium ferrioxalate三草酸合铁（Ⅲ）酸钾potassium isopropoxide异丙醇钾

1. An excess of fat will lead to heart disease.
   脂肪过剩会导致心脏病。
2. This wave of excess density is sound.
   这种过剩密度的波就是声波。