含“ragweed”的英语例句

Common ragweed is one of the most important herbs.
从英语翻译成西班牙语

More than 50 million people in the United States suffer from allergies, and their numbers are growing. New studies suggest that climate change may be at least partly to blame. Scientists say rising average temperatures and elevated levels of carbon dioxide are spurring the growth of many weedy, allergenic plants — such as ragweed — and extending the season of suffering for pollen-sensitive people across the country.
从英语翻译成西班牙语