However tough rhododendrons may be, they still have their limits. Looking around Europe, in Britain one can often see rhododendrons blooming in spring, but in Switzerland, with its extremely cold and dry winter climate, one sees no trace of them.
杜鵑再強壯也有侷限，在歐洲，英國春來常見杜鵑開，高冷卻乾燥的瑞士就難尋杜鵑花蹤了。