Authorized Personnel Only
[関係者](https://eikaiwa.dmm.com/uknow/questions/1507/)以外[立入禁止](https://eikaiwa.dmm.com/uknow/questions/38564/)
No Trespassing
無断立入禁止
Keep Out
立入禁止
上記のような表記をアメリカの看板でよく見かけます！
Authorized Personnel は「関係者」という意味です。
Trespassing は「侵入」とか「無断での立ち入り」を意味します。
Keep Out はそのまま「入るな！」ですね。笑
I suppose that "Do Not Enter" is a sign used often in areas with potential danger such as construction sites or if you're driving on the wrong side of the road or some building where you don't have permission to enter.
It could also be potentially used on a door in which only Staff can enter but "Employees only" is MUCH more commonly seen in commercial areas such as supermarkets or retail stores in rooms where only staff/employees can enter.
私は、 "Do not Enter"は、建設現場などの危険がある地域や、道の悪い側や入ることが許されていない建物で頻繁に使用される標識であると考えています。
それは、スタッフだけが入ることができるドアに使うこともできるが、「Employees only」は、スタッフ/従業員だけが入ることができる部屋のスーパーマーケットまたは小売店のような商業エリアでより一般的に見られる。
"No entry, Staff Only"
This explains that staff working there are only allowed in the area and that people of the public are not allowed to enter the area.
"Authorized Personnel Only" This means that only people who are authorized are allowed into this area. People of the general public have not been given permission so are not authorized.
I thought I had found the main entrance, until I saw the sign: ACCESS PROHIBITED!
ACCESS PROHIBITED! "You are not authorized to use this area!"
This sign says it all; keep out/no entry /private. And should be clear enough to get the message across firmly IE STAY OUT ;-D
"I thought I had found the main entrance, until I saw the sign: ACCESS PROHIBITED!"
ACCESS PROHIBITED! "You are not authorized to use this area!"
（立ち入り禁止！この場所は真宗してはいけません！）
この表示ですべてを語っています。
keep out/no entry /private（立ち入り禁止）
そして、これで十分明確に理解できるはずです。
つまり、 STAY OUT （立ち入り禁止）;-D
【例】
"I thought I had found the main entrance, until I saw the sign: ACCESS PROHIBITED!"
（正面玄関を見つけたと思ったけど、立ち入り禁止の表示を見つけました）
The first two examples would be used if it was only for members of staff or people who work at the facility. We can also simply put, "keep out," which means that access is forbidden.
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