Language Point 19
Learning a foreign language has been a most trying experience for me, but one that I wouldn't trade for anything. (Para. 8)
Meaning: Learning a foreign language has been an experience full of difficulties, but I wouldn't exchange it for anything else.
trade (in) ... for... : exchange ... for...
He decided to trade his car for a truck. 他决定用小汽车换卡车。
In order to pay off his debts, he had to trade in his piano for money. 为了还债,他只好把钢琴拿去换钱。
Cf. trade on: make use of
He traded on his brother's kindness to get more money from him. 他利用哥哥的善良,想从他那儿多弄点钱。
The senator's son traded on his father's name when he ran for mayor. 参议员的儿子在竞选市长时利用了他父亲的名望。
n. 仁慈,好意