古墓之谜 29

Twenty-eight,JOURNEY’S END,Poirot looked round. Every eye was now fixed ¹ upon him. There had been a certain relaxation—aslackening of tension. Now the tension suddenly returned.,There was something coming .?.?. something .?.?.,Poirot’s voice, quiet and unimpassioned, went on: “The letters, the roof, ‘the window’ .?.?.,Yes, everything was explained—everything fell into place.,There was a silence, a bewildered, uncomprehending silence. Dr.?Leidner said nothing. Heseemed lost in his faraway world still. David Emmott, however, stirred uneasily and spoke ⁴.,“I don’t know what you mean to imply, M.?Poirot. I told you that Dr.?Leidner never left theroof until at least a quarter to three. That is the absolute truth. I swear it solemnly. I am not lying.,And it would have been quite impossible for him to have done so without my seeing him.”,Poirot nodded.,“Oh, I believe you. Dr.?Leidner did not leave the roof. That is an undisputed fact. But what Isaw—and what Miss?Johnson had seen—was that Dr.?Leidner could murder his wife from the roofwithout leaving it. ”,Once the aim is fixed,we should not change it arbitrarily.目标一旦确定 ，我们就不应该随意改变。,Do you have any proof to substantiate your alibi? 你有证据表明你当时不在犯罪现场吗？