1. 无聊乏味地继续着：grind v.磨碎;磨擦 | grind on 无聊乏味地继续着 | grinding adj.刺耳的
2. 坚定地、无情地向前移动：grind off 磨掉 | grind on 坚定地、无情地向前移动 | grind out 碾成以转动而产生 单调地演奏手摇风琴费力作成苦吟(诗句)
3. 研磨：grind off ==> 磨掉,磨去 | grind on ==> 研磨 | grind on dead centers ==> 在死顶尖上磨
1. Stricker didn't make it easy on himself, having to grind for pars as Donald kept pouring in birdies.