词汇	三价离子
释义	三价离子 trivalent ion
随便看	These trees began to bear fruit in These trees began to bear fruit in 1958 These trees often have deep roots These trees sell for $100 a whack These trees supply shade in summer These troops are stationed in support These tropical flowers have bright colors These trousers are torn at the knee The sets the set scene The sets of figures are not comparable The sets,props and costumes were all ready The sets, props and costumes were all ready The Setting the setting/declining sun the setting of a jewel the setting of courses the setting of curriculum the setting of majors the setting of practise the setting of role the setting of steel bar the setting of the sun The settings of curriculum the setting sun