the sink or source of the conserved property

英语翻译source of the 翻译：the total amount of energy is conserved. presentation of the property翻译 急,The writer conserved bandwidth sink to the bottom of the sea "the source of obligation"是什么意思 It is the source of Mouth is the source of The life of the property 翻译 英语翻译the number and kind of shares or other property subject 英语翻译If the cost of property made obsolete or excess as a res money is the source of the happy