Non-gratuitous
有偿行为
🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
🗣️ 情景例句
Sorry about the inconvenience.
对不起添麻烦了。
An enemy's mouth seldom speaks well.
狗嘴里吐不出象牙。
as Walter Sullivan has put it in his excellent book, We Are not Alone.
正如沃尔特·沙利文在其杰作《我们并不孤独》中阐述的。