It's pretty hard to explain.
這事很難解釋清楚。
The description was pretty vague.
這項(xiàng)描述是相當(dāng)含糊的。
That's a pretty stretch of coast.
那是一段美麗的海岸線(xiàn)。
You looked pretty upset just now.
你剛才看上去很沮喪。
She had a pretty tough childhood.
她度過(guò)了一個(gè)非常艱苦的童年。