6、nonflammable adj. 不易燃的;
7、noninteractive a. 不相关的，非交互的;
8、nonviolent adj. 不使用暴力的，非暴力的.
例句：
Affecting nonchalance, I handed her two hundred dollar bills.
我假装若无其事地递给她两张百元钞票。
She was very tense, but she preserved an appearance of nonchalance.
她内心很紧张，可外表却装着满不在乎的样子。
It may be advisable to take out a home-equity loan to pay off other nondeductible obligations.
所以来建立一个家庭贷款来支付其他的不可抵减的债务是明智的。