单词	activity substance
释义	activity substance 活性物质
随便看	a disposable income A disposition to be generous or helpful A disposition to feel A disposition to feel, do, or say A disposition to feel,do,or say; a propensity a disposition to fight a disposition to fish a disposition to learn from each other a disposition to quarrel A disproportionately large head a disputed area a disputed case a disputed question A Dispute of Inheritance or Division A Dispute of Inheritance or Division? a dispute of long standing a disqualification a disquisition on CAD a disreputable-looking fellow a disreputable practice a dissatisfied customer a dissected map a dissenting clique A dissertation is required for all Ph.D.degrees a dissertation that lacks harmony