Roughly speaking, there were about 30 people in the bus.
大雑把に言えば、バスには30名ほどの人達がいました。
I grasped the entire structure of his argument.
私は彼の議論の全体像を把握した。
He was master of the situation.
彼はその情況を把握していた。
While one of them sped around major parts of the property on the mower, a second made a few sweeps at some tall weeds on the edge of my wife's garden, and the third got into the truck and smoked a cigarette.