Going with lighter weights in the beginning is the magical ingredient.

以较轻的力量训练为开端有神奇的效用。

Each automatic door system analyses the light, sound, weight or movement in their vicinity as a signal to open.

每个自动门系统都会分析它们周围的光线、声音、重量或运动作为开门的信号。

If you want to become stronger, it's very clear that you should swing your program towards heavier lifting with sporadic time in light weight training.

如果你想更健壮，你显然应该让训练项目偏向，在轻负荷锻炼的间隙，举更重的东西。