| 释义 |
1 [航]?安全高度 ... 安全改出边界 recovery boundary 安全高度 safety height 安全环状浮袋 flotation collar ...
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Their height, level of maturity, their interests, as well as their need to play and travel safely to school, mean that they require special safety measures. 他们的身高、成熟程度、兴趣以及玩耍和安全到校的需要，意味着需要对他们采取特别的安全措施。 - 2
Through a lot of data and practice we find all sorts of steering system is superior, but the car steering system every change makes the vehicle of manipulative, safety rose a height. 通过大量的数据及实践我们找到了各种转向系统的优劣，但汽车转向系统每一次的变革都使整车的操控性、安全性上升了一个高度。 - 3
But for the first time, I asked you to be at least 9000 feet above, because this is also the national parachute Association USPA, identified as the height of the safety parachute. 但是第一次跳伞我要求你一定是要在，最低9000英尺以上的，因为这个也是美国国家跳伞协会USPA，认定的安全跳伞高度。
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