The ejected mass then probably becomes the observed material of a supernova outburst.在这种情况下,抛射物质可能就成为一次超能量爆发中的观测对象.These sources are generally viewed in projection against radio nebulae representing the remnants of super...
硅酮隆胸植入物a silicone breast implant一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异，使其不能繁殖，也不会再感染新的细胞。A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells.所有的主要难点都涌现在烯酮 ( 1 ) 的合成中....
Some dozen barefooted urchins ganged in from the riverside.几十个赤足的顽童从河边成群结队而来.The foreman ganged the men together.工头把工人集合起来。The boy was frail and never ganged with his fellows at school.这个男孩身体虚弱,从不和同学们一起玩.He often ganged ...