杜中石同志: 來信收到。對於信中所提之點,很表感謝。我們已一方面去信原作者;但因在外埠,信件往返需時,本期不及發表,將於下期披露。 Comrade Du Zhongshi: I have received it. Thanks for the points mentioned in the letter. We have written to the original author on the one hand, but because of the time required to travel abroad from other places, we will not be able to publish this issue and will be disclosed in the next period.