Fat is a much less efficient fuel than carbohydrate.
脂肪比碳水化合物的燃料效率低多了。
They’re a little less efficient, but cost a quarter as much to produce.
这种电池效率不是太高，但是制造成本仅为后者的四分之一。
The problem is that this latter approach is currently much less energy-efficient, says Dr Coe-Sullivan.
问题是，后者所采用的方式在目前却不够节能，柯-苏列文博士讲道。
The problem is that this latter approach is currently much less energy-efficient, says Dr Coe-Sullivan.
问题是，后者所采用的方式在目前却不够节能，柯-苏列文博士讲道。
应用推荐