In the pines squirrels commonly chew off and drop entire cones.松树上的松鼠通常咬掉和弄落整个球果.This is beautifully decorated with colored paper, cones, candles, and miniature colored flags or pennants.把这个用彩纸、金色的松果 、 蜡烛以及小型的彩旗或者三角旗装饰起来...
By burning tree branches, pine needles, and pine cones, many not only warm their houses but improve the smell therein.许多人在家里烧树枝、松针和松果，不但给房子取暖，还改善了屋里的气味。In the pines squirrels commonly chew off and drop entire cones.松树上的松...
这是一桩偶发的事件.It was quite an accident.事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。It became very clear that the incident was not just an aberration, it was not just a single incident.克雅氏病通常以“个例 ” 形式而且在50岁以下的人中偶发.In its common'sporadi...
偶极子在它的轴的方向上不发射能量.The dipole does not radiate energy in the direction of its axis.欲求的因子为图40那样的脉冲偶极子.The desired operator is the spike doublet of Figure 40.自然界中只能出现磁偶极子以及磁多极子的形式.Only magnetic dipole and higher multipole co...