His letter poses a number of puzzling questions.他的信中提出了许多令人困惑的问题。This poses a threat to agriculture and the food chain, and consequently to human health.这会对农业和食物链造成威胁，由此而危及人的健康。The high cost of oil poses serious problems...
Traditional instruments including drums, maracas, guitars and turtle shells are used for religious and secular occasions.传统的乐器包括鼓 、 沙球 、 吉他和海龟壳,用于宗教典礼和日常生活....