🗣️ 情景例句
I'm not sure I'm up to it.
我不能肯定我是否能做得来。
We can offer door-to-door delivery services.
我们可提供送货上门服务。
I'm afraid I can't do that right now. the manager isn't here.
恐怕我现在不能退钱给你。经理不在这里。