The boy surrendered the catapult to the teacher.那孩子把弹弓交给了老师.He fitted a pebble into the catapult and pulled back the elastic. Twang!他把石子放进弹弓里,然后往回拉动橡皮筋。“嘣”!The sting of the catapult bullet had worn off.挨的那下弹弓不那么疼啦....
He was grinning proudly, delighted with his achievements.他为自己的成就感到喜悦, 自豪地咧着嘴笑。...a mass of grinning teenage faces.一张张少年的笑脸He was grinning proudly,delighted with his achievements.他为自己的成就感到喜悦,自豪地咧着嘴笑。He was grinning widely...
那么医生是如何防止斑疹伤寒的扩散与传播的 呢 ?And how do doctors prevent the spread of typhus?目的报道一起水源性暴发流行伤寒的临床特点.Objective To report the clinical characteristics of water source outbreak abdominal typhus.相同的, 各组小鼠对沙门菌伤寒的抵抗力也无不同.Similarly, t...