Foreflow
前驱流动
🗣️ 情景例句
Does two o'clock sound alright?
两点钟好吗？
Could you tell me where is the gas station?
你能不能告诉我加油站在哪里？
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.
然而，在和外星人联系中我们遇到的最大困难是分隔我们的天文距离。