预约成功
亚马逊河流域具有世界上有名的复杂生态系统，中国的科学家在2004暖7月首次来到该地区，进行科学研究考察。
翻译要点：
(1)生态系统
(2)世界著名
(3)为了科学研究
典型错误：
The Amazon Basin possesses a complex ecological system，which is famous in the world.Chinese scientists came to this place for the first time in July，2004，for making scientific investigation and studies.
将下面的句子翻译成中文：
The engineer has a knowledge of mathematical and natural science acquired by study experience and practice which is applied with judgment to develop ways to utilize，economically，the materials and forces of nature for the benefit of mankind.
