safe running days [交] 行车无事故天数 ; 行车无事变天数
number of safe operation days 安全运行天数
safe running days haha 行车无事故天数
A 3-year-old boy who was lost in the woods for two days is now safe at home with his family.
一名在树林里迷路了两天的三岁男孩现在和家人安全地呆在家里。
Dust storms very probably happen on hot summer days, and it's not safe for people to travel during this period.
沙尘暴很可能发生在炎热的夏天,在这个时期人们旅行是不安全的。
Our streets are actually not as safe as they were in the days of our grandfathers.
我们的街道不再像我们的祖父那个时代一样安全了。
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