需要: 1.(应该有或必须有) need; want; require; demand; do with 短语和例子需要立即采取行动 require immediate action; 她需要休息。 she is in need of a rest. 我们需要一个和平的国际环境。 we want [need] a peaceful international environment
能量: 1.[物理学] energy; amount of energy 短语和例子能量转化 energy conversion2.(能力) capabilities; capacity; 能量不灭 conservation of energy; 能量不灭定律 law of conservation of energy; 能量交换 energy exchange; 能量均分 equ
