手掌真的是攤開的
這一組完全站在字面上：描述動作時，手就是攤平的那個樣子。
adjective · B2
Done with the hand flat and open rather than closed into a fist.
手張開的（動作）
核心畫面
Picture a hand held out flat, palm up, fingers apart. Two things are true of that hand at once: nothing is gripped in it, and nothing is hidden under it. Because nothing is gripped, whatever is in the hand can leave it — money, time, help. Because nothing is hidden, the person facing you can see exactly what you are carrying, which is why an open palm has long meant both giving and peace. Every use of this word is one of those two readings of the same hand.
可以想成一隻攤平的手，掌心朝上，手指張開。這隻手同時說了兩件事：手上沒有握緊什麼，手下也沒有藏什麼。因為沒有握緊，手…更多收起
可以想成一隻攤平的手，掌心朝上，手指張開。這隻手同時說了兩件事：手上沒有握緊什麼，手下也沒有藏什麼。因為沒有握緊，手上的東西就容易出去——錢、時間、幫忙都是。因為沒有藏，對面的人看得到你手上有什麼，所以攤開的手一直同時代表「給」和「沒有惡意」。這個字的每一種用法，都像是在讀這隻手的其中一面。From the word’s history
Formed from open + handed, so the word says the hand is open and the rest follows from that.
由 open（打開的）＋ handed（有…手的）組成，字面就是「手是打開的」，其他意思都從這句字面長出來。
Wiktionary (kaikki extract, open-handed): From open + handed.
Three branches
手張開，東西就流出去：大方
讀這隻手的第一面：沒有握緊，所以手上的東西留不住，也不想留。
adjective · B2
Giving money, help, or time freely and warmly, without counting the cost; also used of the offer or the act itself.
慷慨大方
手張開，底下沒藏：坦誠
讀這隻手的另一面：手下沒有藏東西，所以對方看得到全部。
adjective · C1
Dealing with people openly and honestly, hiding nothing and not holding anything against them.
坦誠不藏的