Sherpa has been loading his truck with large bags of rice, lentils, cooking oil and other necessities.

昂普巴一直在给他的卡车上装大袋的大米、扁豆、食用油和其他必需品。

That person is loading up a truck that will cross the Rio Grande.

那个人正在装一辆要穿越格兰德河的卡车。

Binding of oxygen to hemoglobin is kind of like loading a moving truck.

氧气与血红蛋白的结合有点像装载一辆正在行驶的卡车。

The problem was that the cranes that put containers on trucks were loading the first truck that arrived, often travelling unnecessary distances up and down the port, which made the whole process much slower overall.

问题在于， 将集装箱装上卡车的起重机正在装载第一辆到达的卡车，经常在港口上下不必要的距离，这使得整个过程总体上要慢得多。