投奔的英文：
to seek shelter
to seek asylum

参考例句：

To fly to one’s former ruler for refuge
投奔故主

In last year, there were 583 defections, which set a new record for the country
去年，有583人投奔韩国而打破记录。

Valentine scarce knew which way to bend his course.
瓦伦丁简直不知道往哪里投奔才好。

This comes on top of three defections: two to the Conservatives and a third who has chosen to sit as an independent.
之中三位的背叛使其达到顶峰:两位投奔保守党，第三位则选择以无党派人士身份列席。

seek是什么意思：
v. 寻找；探索；追求；试图，设法；搜索；搜查

They were seeking employment.
他们在找工作。

I'm seeking for the evidence.
我正在搜查证据。

The raven will seek the carrion.
渡鸦爱觅腐尸。

shelter是什么意思：
n. 遮盖物；遮蔽，庇护；避难所，收容所
v. 遮挡；躲避；庇护

They are people sheltering illegal immigrants.
他们是为非法移民提供庇护的人们。

This is a shelter for homeless women.
这是个收留无家可归的妇女的收容所。

But caves are a natural shelter.
山洞是自然的躲避所。

asylum是什么意思：
n. 庇护；庇护所，避难所；精神病院，收容所

He works in an insane asylum.
他在一家精神病院工作。

There shall be asylum for habitual teetotaler.
应该有为习惯性绝对禁酒主义者而设的收容所。

They campaigned on behalf of asylum seekers.
他们为政治难民发起运动。