breeding ground

音標(biāo)發(fā)音

Also useful is a Clinton-era pids concerning the inadvertent destruction of a dove breeding ground.
尅林頓時(shí)代，還有過一次關(guān)於某鴿子繁殖地被無意間破壞的發(fā)佈會。
All the still water creates a perfect breeding ground for one of nature’s largest killers – the mosquito.
大片的靜水形成了一個(gè)自然界最大的殺手——蚊子——的完美的滋生地。
The perfect breeding ground for collaboration, the Internet moves ideas and code around the world in an instant.
互聯(lián)網(wǎng)是完美的郃作滋生地，它把各式各樣的想法和代碼瞬間傳遍世界各地。

Today's economic muddle, which resembles the 1970s, is a classic breeding ground for entrepreneurship.
FORBES: An American Heartland Renaissance
And these conditions left a generation disillusioned, and made this region a breeding ground for extremism.
NPR: Bush Addresses U.N. on Peace in Middle East
Chaudhery hopes that Nano City will in time become a breeding ground for would-be billionaires.
FORBES: Magazine Article

If you refer to a situation or place as a breeding ground for something bad such as crime, you mean that this thing can easily develop in that situation or place.
The breeding ground for a particular type of creature is the place where this creature breeds easily.