safesn.保险箱（safe的复数）；钱盒safeadj.安全的；安然无恙的；可靠的；谨慎的n.保险箱safe working stress安全应力safeside root facer安全根面锉safe flight surface安全飞行曲面safe steady control安全稳定控制safe nautical depth安全航行safe operation area安全工作区safe summer-spent安全度夏safe allowable load安全容许载荷safe drinking water安全饮用水Safe storage height储油安全高度