unsafe depth foundation of bridge

例句：

1. 1. The construction site was unsafe due to the lack of proper safety measures.
   由于缺乏适当的安全措施，施工现场不安全。
2. 2. The accident involved a vehicle that was unsafely loaded with heavy cargo.
   这起事故涉及一辆超载的车辆，其安全性堪忧。
3. 3. The company's decision to invest in new technology was seen as unsafe by some experts.
   一些专家认为，公司投资新技术的决定不够稳妥。