5个以ness后缀的单词

　　She also said the alertness will change according to the level of potential threat.

　　她也说，警戒将随时根据受威胁的水平而调整。

　　Produces changes in brain activity associated with decreased alertness;

　　影响中枢活动，警觉能力下降；

　　Chinese Education Department also made an urgent announcement, appeal people to raise alertness.

　　中国教育部周四也发出紧急通知，呼吁提高警戒。

　　And so the first thing I want to do is to test your alertness.

　　所以首先我来，测测各位的机警性。

　　Ginseng was reported to have increased energy and mental alertness.

　　人参可以增进体力和提高精神敏捷性。