You turn it on by either selecting that option from the Safety button at the upper right, or from the Tools menu in the Menu Bar if you have chosen to make that bar visible.

你可以在右上角的“安全”按钮里选择这个选项；如果你已经选择让菜单栏变成可见的，你也可以通过选择菜单栏中的“工具”菜单选定。

youdao

Life has No reset Button, Think Safety.

生命只有一次，留心方能安全。

youdao

Machine includes one safety edge and one emergency stop button to ensure the operator's safety.

机器包含一套安全感应条及急停按钮，保证操作安全。

youdao

Second, every time I put the lid on the mixing bowl, which is what presses the safety button that allows the motor to spin, I felt like I had to force it a little.

FORBES: Still Made by Hand: The Original Food Processor

Other important textile tools include the safety pin, the button, the zipper.

FORBES: Magazine Article

Beyond generalized concerns over vaccine safety, a hot-button controversy at the time, there were also some parents and social conservatives who worried that vaccination might be seen as a green light by teenage girls to have premarital sex.

FORBES: Merck & Its HPV Vaccine: Sales & Skepticism Are Both Up