This means the dog must stay down even if the owner or someone else tosses a ball in front of the dogs feet or drops a hot dog 4 feet from where he is lying.
这就意味着即使有人在狗儿面前扔出一个球或食物，狗儿也必须卧下不动。
The impact of an asteroid at the moon's South Pole 4 billion years ago threw out a colossal surge of debris - like a dog furiously digging a hole in the sand.
这40亿年前发生在月球南极的小行星撞击抛出了一大片碎渣——就像一只狗疯狂地在沙地里刨洞一般。
It is said that a pet dog was buried under a white poplar tree, the near 4 square meters' area was surrounded with fence, and there were flowers around the marble tombstone.
具了解一只宠物狗被安葬在一棵速生白杨树下，近4平方米的土地用篱笆围起，大理石墓碑前还有绢花环绕。
Results 86 cases of severe dog-bitten, including 4 bitten by rabies dogs and 8 by virus-carrying dogs, protected from rabies.
结果经过上述处理的86例严重犬伤者（包括4例狂犬伤和8例带毒犬伤），均得到了有效保护。
MethodsA home pigeon CuSO 4-vomiting model and dog -apomorphine vomiting model were used to observe the latent period of vomiting and the frequency of vomiting.
方法分别采用家鸽硫酸铜致吐模型及犬去水吗啡致吐模型，以观察呕吐潜伏期及呕吐频率。
MethodsA home pigeon CuSO 4-vomiting model and dog -apomorphine vomiting model were used to observe the latent period of vomiting and the frequency of vomiting.
方法分别采用家鸽硫酸铜致吐模型及犬去水吗啡致吐模型，以观察呕吐潜伏期及呕吐频率。
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