man-made element

例句：

1. 1.The man-made element in the experiment is crucial to its success.
   实验中的人造元素对成功至关重要。
2. 2. The city's skyline is dominated by man-made elements like skyscrapers and bridges.
   城市的天际线被人造元素如摩天大楼和桥梁所主导。
3. 3.The research team focused on identifying the man-made elements that could potentially impact the ecosystem.
   研究团队专注于识别可能影响生态系统的人造元素。