🧩 词语组成解析
pin
[pin]
n. 钉;别针，扣针，饰针;大头针;没价值的东西;
vt. 压住;（用钉等）钉住，钉住，别住，扣住;用障壁等)围住，关住（俚语）抓住;[军]牵制;
adj. 针的;钉的;销的;大头针的;
clover
[['kləuvə]]
n. 红花草\\n[建] 三叶草
🗣️ 情景例句
I'm about to go to the Post Office.
我正要去邮局。
I want you to clean your room today.
我希望你在今天自己打扫房间。
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。