Theglobalbuildingsectorcurrentlymakesuparound30percentoffinalenergyuse,anditsenergysavingspotentialissignificant.
自己还养了一头母牛,每年都会vINd一头牛犊,养一年,能卖5000多块钱,算起来要生100个牛犊,才够给孩子还贷款的fEQn