急求drive at的意思,顺便造个句,

问题描述:

急求drive at的意思,顺便造个句,

意指,用意所在。
I don't understand what you're driving at.
我不明白您的意思

The scout let drive at the enemy sentry with his left first.
侦察员用左手对着敌人的哨兵一拳打过去.
意指,打算
I simply can't guess what Mary is driving at.
我简直猜不透玛丽意指什么.