To ensure safety, I am willing to spend more.

为了保证安全，我宁愿多花点钱”。

This precaution is necessary to ensure safety.

这种措施对确保安全是必要的。

Everybody ZunZhangShouJi, ensure safety first.

人人遵章守纪，确保安全第一。

The responsibility of the head, bow to ensure safety.

抬头明责任，低头保安全。

This machine should be earthed correct to ensure safety.

本机必须正确接地，确保安全。