名词
中文翻译：铁心
同义词：
['铁心深度，铁心厚度例句：1. The depth of the mine is approximately 200 meters.（矿井的深度大约是200米。）']
例句：
-
1. The depth of the mine is approximately 200 meters.
矿井的深度大约是200米。
-
2.The depth of the ocean is estimated to be around 3,800 meters.
海洋的深度估计约为3800米。
-
3.The engineer used a depth gauge to measure the depth of the hole.
工程师使用深度计测量了洞的深度。