Ships use AIS partly to avoid one another. It takes a long time for a 300m-long tanker carrying hundreds of thousands of tonnes of oil to turn or come to a stop – and vessels can travel potentially many kilometres before they fully adjust their course.
The United Nations Mission in South Sudan (Unmiss) said about 1,000 civilians began seeking protection near its base in the affected area. The mission said it was alarmed by the surge in violence in the region over the past 48 hours.，推荐阅读新收录的资料获取更多信息
。关于这个话题，新收录的资料提供了深入分析
UK’s outstanding jumps rider is winless at the festival but says this could be his year, and explains the challenge of riding so many winners。关于这个话题，新收录的资料提供了深入分析
Many experts had expected that all men at high risk of the disease were likely to be included in new screening plans.