ahead （请解释)

ahead
KK: []
DJ: []
ad.
1. 在前;向前
The hills ahead are not wooded.
前面的山上没有生长树木。
2. 预先,事前
You'd better plan ahead.
你最好事先计划一下。
3. 领先,占先
Two people were ahead of us, and travelling fast.
有两个人在我们前面,走得很快。
4. 多赚,赢得