Aphidoidea
蚜总科
🗣️ 情景例句
Thanks, Harry.
谢谢你，Harry。
What are you going to do now?
现在你要做什么？
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。