2. relentlessness 无情的,冷酷的,残酷的，如：
He was relentless in demanding repayment of the debt.
他冷酷无情地要求偿还那笔债。
3. torrential 奔流的,如急流的,猛烈的，如：
Torrential rain washed out most of the weekend's events.
这场雨很大, 周末比赛项目多数无法进行了。
The area was deluged with torrential rains.
该地区因暴雨而洪水泛滥。
4. overwhelming 势不可挡的,压倒的，如：
The general effect of the painting is overwhelming.
这幅画给人总的印象是很有气势.
The scenic splendors of the Rocky Mountains are overwhelming.
落基山脉的壮丽景色使人赞叹不已。