求翻譯：There is another way to help your friends find you. Give them a signal by shouting or whistling three times. Any signal given three times is a call for help. Keep on shouting or whistling; always three times together. When people hear you, they will know that you are not just making noise for fun. They will let you kno是什么意思？

待解決 懸賞分：1 - 離問題結(jié)束還有