词汇	o2 pulse
释义	o2 pulse 氧脉
随便看	a return plumbing pipe; a return valve a return route a return ticket a return to nature a return to Victorian values a return valve a retuse leaf Are typical species of tropic area aretz Aretz Areu areumal are under repair are under repairs are under the necessity of are under way are undre consideration are un staff members overpaid Are UN staff members overpaid? Are updated to complement one another are upon the table are up to a reverse change a reverse charges call a reversed charge