几句简单的英语翻译，求高手解答。不要度娘的哦！

Question

1.当车辆正常时，拖钩不外露。2.当需使用拖钩时，打开保险杠。3.不使用拖钩时，请闭合保险杠。

Answer 1

When the vehicle is under normal condition, the towing hook won't appear.

If you want to use towing hook, please open the bumper.

When the towing hook is not in use, please close the bumper.

Answer 2

Do not expose the towing hook when the vehicle is fine.

Open the bumper to use the hook.

Close the bumper after use.

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Answer 3

Towing hook should not be discloused， when car is running normally。

Bumper shall be open， when you need to use towing hook。
Bumper shall be closed ， when the towing hook is free of use。

Answer 4

When the vehicle is normal, tow hooks is not exposed. 

When the need to use the tow hooks, open the bumper.

Do not use the tow hooks when closing bumper.

Answer 5

When the vehicle is normal, tow hooks is not exposed.
When the need to use the tow hooks, open the bumper.
Do not use the tow hooks when closing bumper.