1. Her behavior is extremely childish.
    她的行为极为愚蠢。

2. As it was extremely heavy, he dumped it on the counter.
    因为布袋十分沉重，他把布袋砰的一声抛在柜台上。

3. As it was extremely heavy, he dumped it on the counter.
    布袋很沉，他重重地把布袋扔在柜台上。

4. As it was extremely narrow, the man was unable to move,
    由于烟囱太窄，那人无法动弹。

5. "The Basques are extremely likely to be the most direct relatives of the Cro-Magnon people, among the first modern humans in Europe."
    在欧洲最早的近代人中，巴斯克人极有可能与克罗马努人关系最直接。

6. Computers are capable of doing extremely complicated work in all branches of learning.
    电子计算机能从事各种专业知识的极为复杂工作。

7. It is not only of immense size, but is extremely accurate as well.
    它不仅巨大而且走时极其准确。

8. It is not only of immense size, but is extremely accurate as well.
    此钟不仅外型巨大，而且走时也非常准确。