warning line

• 警戒线

warning line的用法和样例：

例句

1. There was a general store and an inn on each side of the line.
   在警戒线两边各有一爿杂货铺和一家小客栈。
2. The rat crossed the picket line and went back to work.
   工贼越过警戒线回去工作。
3. The flood has slipped below the warning stage.
   洪水已降至警戒水位之下。