to trust sb to do sth or to be sure that sth will happen
’I’m sure he’ll help.’ ’ Don’t count on it.’
“我肯定他会帮忙的。” “那可靠不住。”
count on sb/sth to do sth
I’m counting on you to help me.
我就靠你帮我啦。
count on sb/sth doing sth
Few people can count on having a job for life.
很少人会指望一辈子都干一个工作。
We can’t count on this warm weather lasting.
我们不能指望这暖和的天气会持久。