想法、知識過得去
核心畫面用在無形的東西上：腦裡的內容能不能搬到別人腦裡。
adjective · C1
Able to be told, shown or passed on to other people — used about knowledge, ideas or feelings that can be got across rather than only held privately.
可以傳達出去的
核心畫面
One way to hold this word: something is able to make the crossing from one person to the next. Not whether it is good or bad, and not whether anyone wants it — only whether it can get across the gap. Once you have that picture, both uses are the same question asked about different cargo. Send an idea across and the word is about teaching and writing. Send an illness across and the word is about public health. The word itself does not change; only what is travelling does.
可以想成：有樣東西有辦法從一個人身上，過到另一個人身上。這個字不管那樣東西是好是壞，也不管有沒有人想要它。它只問一件…更多收起
可以想成：有樣東西有辦法從一個人身上，過到另一個人身上。這個字不管那樣東西是好是壞，也不管有沒有人想要它。它只問一件事：過得去嗎？畫面抓到了，兩個用法就是同一個問題問在不同的貨物上。過去的是一個想法，這個字就在談教學和書寫。過去的是一種病，這個字就在談公共衛生。字沒有變，變的只是路上走的東西。From the word’s history
From Old French communicable, from Latin communicabilis — the same root as communicate — with the ending -able, meaning able to be done to it. So the parts spell out able to be shared, which is exactly the crossing in the core picture.
來自古法文 communicable，再往前是拉丁文 communicabilis，跟 communicate 同一個字根；字尾 -able 是「可以被…的」。所以零件拼起來就是「可以被分享出去的」，正好就是核心畫面裡的那個過渡。
Wiktionary entry supplied in this packet (kaikki:3f6f69a190036ae4:1410459827): From Old French communicable, Latin communicabilis.
Two branches
疾病過得去
同一個過渡，換成不想要的貨物：病從一個人身上過到另一個人身上。
adjective · C1
Used about an illness: able to pass from one person or animal to another, through touch, through the air, or through something they share.
（疾病）會傳染的