动 rub，scrape，mull over，study ；

[例句] 摩根派遣部队同时袭击了两个据点。 Dividing his command, Morgan assailed both strongholds at the same time.

[例句] 将近100万人渡过这条河进入摩尔达维亚。 Nearly one million people crossed over the river into Moldavia.