用户需求是产品开发的出发点，也是落脚点。
User needs are both the starting point and the ultimate goal of product development.
物体的加速度与所受的合外力成正比，与物体的质量成反比。加速度的方向与合力的方向相同。
The key to sustainable development is to balance economic growth and environmental protection.
Vegetable planting is not only production but also a responsibility. We must be responsible for the health of consumers.
电影是一种语言，它能够跨越国界，传递情感和思想。