1、突然出现
... close calls 侥幸脱险 come out of nowhere 突然出现 to say the least 不夸张地说 ...
2、横空出世
“Come out of Nowhere（横空出世）。”詹姆斯道。
3、突然莫名其妙地发生
...她的行为使我莫名其妙 her conduct is a mystery to me她莫名其妙地生起气来 she got angry without rhyme or reason突然莫名其妙地发生 come out of nowhere ...