a heated building, usually made of glass, used for growing plants that need special conditions 温室；暖房 hothouse flowers 温室花卉
a place or situation that encourages the rapid development of somebody/something, especially ideas and emotions 有利于迅速发展的地方（或环境）；（尤指有利于思想感情发展的）温床 In the hothouse atmosphere of college there are plenty of opportunities for falling in love. 在大学的温室氛围中，有很多恋爱的机会。