It protects people by alerting them to things that might injure them .
通过提醒某些可能会伤害到他们的事物来给予预防。
Past work on immune rejection has shown that a group of immune-system cells called t cells play a crucial role in alerting the immune system to the presence of transplanted organs in the first place .
Live traffic information will be fed directly to the device , alerting drivers to jams and diversions further along their route .
实时的交通信息源源不断地传输到该装置,提醒司机路面前方的拥堵,同时也能够提示前方转弯。
If anything ' if it is an important matter ' call the person first alerting them to the email .
如果有什么事的话如果是一件紧急的事可以先给收件人打个电话提醒他你发了邮件。
Floyd started using twitter two and a half years ago , when he received an automatic email alerting him to the fact that one of his friends had joined .