1、英语：Reduce use。

　　2、根据负载增加和减少使用线程的数量。Increase and decrease the number of used threads depending on load.

　　3、这种放牧方式通过减少杂草的生长减少使用杀虫剂对草地进行处理的需要。This form of grazing can reduce the need for pesticide treatments by reducing the growth of weeds.

　　4、美国和加拿大已经鼓励农民减少使用化学药品。The United States and Canada have encouraged farmers to use fewer chemicals.