off-limits

音标发音

Although the Integration schema is off-limits for any schema changes, this rule does not apply to package-related tasks.
尽管集成方案超出了任意方案更改的限制，该规则并不能适用于与包相关的任务。
Dr. Rogers has retained the technology for creating silicon devices but developed new forms that were previously off-limits because of silicon’s lack of flexibility.
罗杰斯博士沿用了硅器件的制备技术，但他开发出了新的方式突破了早期硅材料缺乏弹性所造成的限制。
Knowing the pinot noir genome should also help people who would like to grow grapes in places now off-limits to them—either for climatic reasons or because local diseases would kill them.
知道了皮诺瓦葡萄的秘密将帮助人们摆脱对葡萄种植地的无限制的观念，因为不管是气候因素或者当地的疾病都可能使葡萄树致死。

Most of downtown L'Aquila is still off-limits, as is the historic districts of most surrounding towns.

Off-limits to foreigners during the Cold War because of its military bases, it had become accessible again.
FORBES: Catch and Release
President Obama is no longer off-limits when it comes to criticism from Al Gore.
FORBES: Al Gore Slams Obama On Climate Change
Another offender: the U.S., whose legislature has put so much territory off-limits to drillers.
FORBES: Don't Shoot!

If a place is off limits to someone, they are not allowed to go there.
If you say that an activity or a substance is off limits for someone, you mean that they are not allowed to do it or have it.