Seat cushion
彈性座墊
?? 詞語組成解析
seat
[sit]
n. 席位，座位;所在地;場所;臀部;
vt. 使就座;使就職;使獲得座位（或席位）;可容納若干座位;
cushion
['k???n]
n. （隔離兩個表面的）墊;墊子;起保護（或緩沖）作用的事物;（臺球等運動）（臺球桌內側邊緣的）彈性襯里;
vt. 使免遭損害;使免受令人不快的影響;（用墊子）使柔和;（跌倒或碰撞時）起緩沖作用;
cush墊，緩沖+ion物 →靠墊
??? 情景例句
Yes, it is right.
對，是正確的。
There's as good fish in the sea as ever came out of it.
海里的好魚是取之不盡的。
My wife and I are walking along the banks of the river.
我和妻子沿河岸走著。