自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
V-ERG (使）（知识、消息等)传播；（使）散布；（使）普及 If something such as knowledge or information is diffused, or if it diffuses somewhere, it is made known over a wide area or to a lot of people.
Over time, the technology is diffused and adopted by other countries.
...an attempt to diffuse new ideas...
VERB 宣泄，舒缓(尤指不良情绪) To diffuse a feeling, especially an undesirable one, means to cause it to weaken and lose its power to affect people.
The arrival of letters from the Pope did nothing to diffuse the tension.
VERB 使(光)漫射;使发散 If something diffuses light, it causes the light to spread weakly in different directions.
Diffusing a light also reduces its power...
The sun slid behind trees, its last light diffused by wintry branches.
V-ERG （使）扩散;（使）弥漫;（使）渗透 To diffuse or be diffused through something means to move and spread through it.
It allows nicotine to diffuse slowly and steadily into the bloodstream...
It created a glowing centre of warmth that quickly diffused through my limbs...
ADJ-GRADED 散布的;分散的;弥漫的 Something that is diffuse is not directed towards one place or concentrated in one place but spread out over a large area.
...a diffuse community...
A cold, diffuse light filtered in through the skylight.
ADJ-GRADED 含糊不清的;难以理解的 If you describe something as diffuse, you mean that it is vague and difficult to understand or explain.
His writing is so diffuse and obscure that it is difficult to make out what it is he is trying to say.