滿到在動的地方和生物
這是這個字的主場：數量多，而且會動的是活的東西。
adjective · B2
Full of people, animals or other living things that are all moving about, so that the place looks packed and busy.
擠滿的；熙來攘往的
核心畫面
One way to hold teeming is to picture a container that cannot hold what is inside it, and what is inside will not keep still. Too many to count, and all of them moving. That is why a crowded market is teeming and a full is not. Once you have that picture, the rain sense is the same picture with raindrops in it.
teeming 可以想成一個裝不下的容器。裡面的東西太多。而且那些東西還一直在動。所以夜市可以是 teeming。塞…更多收起
teeming 可以想成一個裝不下的容器。裡面的東西太多。而且那些東西還一直在動。所以夜市可以是 teeming。塞滿盤子的櫃子就不行，因為盤子不會動。這個畫面一抓住，另一個意思就很好懂。把畫面裡的東西換成雨滴，就是 teeming rain：雨多到數不清，而且全都在往下衝。Two branches
多到像滿出來的雨
同一個畫面換了內容物：數不清而且都在動的，這次是雨滴。這是用法上的延伸，不是另一個來源。
adjective · C1
Used about rain: coming down very hard and in very large amounts.
傾盆的（雨）