to continue making great efforts toward achieving something
继续为实现某事而努力 (jixu wei shixian mou shi er nuli)
"He always tells his students to keep striving for excellence."
"他总是告诉他的学生要为卓越不断努力。" (ta zong shi gaosu tā de xuéshēng yào **wèi zhuóyuè bùduàn nǔlì**)
to stop or reduce pollution sources
to be naturally suited for something
to cause prices or costs to increase
to expand or grow the size or capacity of something
to protect someone by hiding their mistake or wrongdoing
to organize efforts with people in different countries