He often appeared angry and frustrated by the intransigence of both sides.他似乎常常为双方各不相让而生气沮丧。Yet for North Korea, intransigence is the norm.不过对朝鲜来说, 决不妥协是其一贯作风....
Expression of hydrogenion concentrations in terms of molar concentrations is rather cumbersome.用摩尔浓度表示氢离子浓度是相当麻烦的.In 1927, at Chou - k'ou - tien, near Peking, a hominid lower molar of unusual pattern was discovered....