to send an SOS发出紧急呼救信号She stamped out the letters'sOS'in the snow.她用脚在雪地踩出'sOS'这三个字母.So they were asked to draw their SOS families.所以他们被告知的是书画SOS的家庭....
He found that his extremities grew cold.他发现手脚变冷了。Exercise is very important as it keeps the circulation moving and warms the extremities.锻炼非常重要，它可以促进血液循环，保持手脚温暖。In the past, the region had been protected by its forbiddin...