a viral infection病毒性感染He is suffering from viral meningitis.他患病毒性脑膜炎.A variety of viral agents cause aseptic meningitis or meningoencephalitis.各种病毒性因子可引起无菌性脑膜炎或脑膜脑炎....
飞机攀升到370英尺时，开始偏航。As the plane climbed to 370 feet, it started yawing.两只吊舱的独立俯仰和偏航均会产生噪声.Independent pitch and yaw of the two birds produce noise.只有对接近于轴对称的飞行器,俯仰与偏航的耦合才能略去.Pitch - yaw coupling can be neglected only for n...
约有250位来宾参加了奉献典礼。Some 250 guests attended the dedication ceremony.所有来宾必须到接待处报到。All visitors must report to reception.博物馆正在修建新的来宾接待室。The museum is building a new reception centre for visitors....