解释下列句子中的词语：     

⑴杞国有人忧天地崩坠，身无所寄，废寝食者

废寝食：                                                                       

⑵若屈伸呼吸，终日在天中行止，奈何忧崩坠乎

奈何：                                                                          

⑶地，积块耳，充塞四虚，无处无块

积块：                                                                          

⑷衣素衣而出

衣（前一个）：                                                          

⑸子无扑矣，子亦犹是也

扑：                                                                              

⑹向者使汝狗白而往黑而来

使：