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- You don't need a college degree to become a doula, but to be competitive in the field you should be certified by Doulas of North America . 成为助产师不需要大学文凭，但要想在此领域拥有很强的竞争力则需获得由北美助产师协会签发的证书。
- You don't need a college degree to become a doula, but to be competitive in the field you should be certified by Doulas of North America The median fee for a birth doula is $700 per birth. 成为助产师不需要大学文凭,但要想在此领域拥有很强的竞争力则需获得由北美助产师协会签发的证书。一位助产师的中等工资为每助产一个宝宝将获得700美元的酬劳。
- Mexico is in the south of North America. 墨西哥在北美洲南部。
- New York is the metropolis of North America. 纽约是北美的大都市。
- The Indians were the original inhabitants of North America. 印第安人是北美最早的居民。
- The plains of North America are colonized by rodents. 北美大平原生长著许多啮齿动物。
- Doulas of North America 北美的一个为妇女提供生产和产后健康教育服务的国际性组织
- He outlined a map of North America. 他画北美地图的外形。
- He outlined a map of North America . 他画北美地图的外形。
- Large herds of bison used to live on the plains of North America. 大群的野牛过去曾生活在北美大草原上。
- Alaska is at the western extremity of North America. 阿拉斯加在北美西部的尽头。
- Common swallow of North America and Europe nests in barns. 北美洲和欧洲普通的燕子，在谷仓筑巢。
- For ten years she dwelled among the nomads of North America. 她在北美游牧民中生活了十年。
- Prairie dogs chiefly live in the Great Plains of North America. 草原袋鼠主要分布在北美的大平原上。
- Italian explorer of the Atlantic coast of North America. 韦拉察诺，乔瓦尼·达1485?－1528?发现北美洲大西洋海岸的意大利探险家
- The part of North America south of the United States. 美国的北美洲南部地区。
- Indians were the original inhabitants of North America. 印第安人是北美的土著居民。
- A brightly colored butterfly(Argynnis aphrodite) of North America. 北美豹蝶北美一种色彩明丽的蝴蝶（纹蛱蝶属纹蛱蝶）
- The plains of North America are colonized by rodents . 北美大平原生长着许多啮齿动物。
- All proceeds benefit the Dachshund Rescue of North America. 所有收入归北美达克斯狗救助会所有。
