[Speak] 解釋清楚、有損、不相上下

Words from my little notebook:

1. 解釋清楚、闡明: hammer home
The manager tried to hammer home the goal of this project to his employee.
2. 毀、有損: mangle
mangle your name 破壞你的名聲
3. 不相上下: on par with
His performance is on par with professional players.