Labor-saving machines will give Americans more free time.
省力机械会给美国人更多的自由时间。
2
Babbage envisioned a more accurate, labor-saving way of making such tables, and his Difference Engine was the result.
巴贝奇设想能有一种更精确、解放人力的方法来计算这些表，而他的差分机就是这个解决之道。
3
What we have gained in convenience from labor-saving devices over the past half-century, we have paid for in terms of a sharp decline in physical activity.