v.动词
propagate, circulate, diffuse, disseminate, expand, extend, radiate, spread这组词都有“延伸”“延长”“伸展”“展开”的意思。其区别是：
1.spread指向四面八方扩大范围。
2.circulate指无拘无束地或不间断地传播、散布到各处。例如:
She opened a window to allow the air to circulate.她打开窗户使空气流通。3.disseminate指到处传播思想、理论等。例如:
They use the press to disseminate right wing views.他们利用报刊来传播右翼观点。4.diffuse指光线、声音、气味等在空中传送或散布。例如:
Light diffused from the window.光从窗户射进来。5.extend指延展物体的长度、宽度,延伸或扩大某一事物,以及延长时间、期限等,也指伸开四肢或躯体。例如:
They extended the road for three more miles.他们把那条路又延长了三英里多。
The headmaster extended our holidays by a week.校长把我们的假期延长了一个星期。6.expand指扩大面积或体积,也指把合拢的东西放开即三维。例如:
This county has expanded its area under cultivation by more than 50,000 mu .该县扩大了50,000亩耕地。
Heat expands metals.热使金属膨胀。
He does exercises to expand his chest.他做体操扩胸。7.propagate通常指宣传某种信念、看法或传播某种言论,以使更多的人相信或参与。例如:
We should not only learn knowledge, but also propagate it.我们不仅应学习知识,而且应传播它。
The Greek civilization was propagated all over Europe.希腊文明传播至整个欧洲。8.radiate指从中心向四面八方散发,是技术用语,特指光或热的辐射。例如:
The sun radiates light and heat.太阳放射光和热。
The electric heater radiated warmth.电暖器散发出热量。spread，circulate，distribute，propagate这些动词均含“传播，散播”之意。
spread普通用词，使用广泛。指传播疾病、思想、文化、习惯或谣言等。
circulate既指某物在一物体内循环流动，又可指在一定范围内传播物品、刊物或思想、语言等。
distribute指把一定数量的东西分成若干等份进行分发。
propagate指宣传，尤其指官方为达到一定政治目的而进行的传播活动。
用作动词 v.
～+名词propagate sound传播声音～+副词propagate cunningly精巧地传播propagate easily容易传播propagate peacefully安静地传播propagate rapidly迅速蔓延～+介词propagate by taking cuttings用插条的方法繁殖propagate by vibrations靠震动传播
propagat-ive形容词后缀⇒v.繁殖²¹;增殖⁷;传播⁶⁵;传送⁷近义词 grow增加breed繁殖raise上升spread传播multiply乘produce生产promote促进diffuse扩散generate产生transmit传达increase增加sire雄性种兽disperse分散reproduce再生circulate流通broadcast广播publicize宣传procreate生育pass around分promulgate发布distribute分配disseminate散播proliferate繁殖circularise传阅circularize发传单
用作动词v.
用作不及物动词
S+～+ARabbits propagate rapidly.兔子繁殖迅速。
The plants propagate quickly in warm temperatures.温暖的气候植物繁殖迅速。
The crack will propagate only to this point.这条裂缝只能裂到这种程度。
用作及物动词
S+～+ n./pron.The weeds propagate themselves rapidly.杂草繁殖很快。
Water easily propagates sound.水易传声。
The metal propagates heat rapidly.此金属传热快。
We should not only learn knowledge, but also propagate it.我们不仅应学习知识,而且应传播它。
Sound is propagated by vibrations.声音靠震动传播。
The Greek civilization was propagated all over Europe.希腊文明传播至整个欧洲。Pcyclicopropagative周期繁殖的
v.动词
propagate的基本意思是“增加”“扩大”,可指动物、植物或人的“繁殖”,不侧重繁殖的方式,也不暗示内在的性活动。引申则可指“散布”“传播”,如信仰者或成员的增多,活动或运转的频繁或信息的传播等。
propagate可用作及物动词,也可用作不及物动词。用作及物动词时,可接名词或代词作宾语。可用于被动结构。
动词87%,名词13%
This kind of cellpropagatesfaster in warm environment.在温暖的环境中,这种细胞增殖更快。
We should propagate scientific ideas .我们应该传播科学思想。
Missionaries went far afield to propagate their faith.传教士到远方去传播其信仰。 And the methods of grafting, stem cutting or layer has low propagative coefficient and they easily result in degeneration of good species.
采用扦插、嫁接、压蔓等无性繁殖方法，不仅繁殖系数低，且易造成良种的种性退化。 cnki
For the clones, the ecological plasticity of vegetative propagative ability was high, but was relatively less for rhizome and inter- nodal length.
实验光稃茅香无性系的营养繁殖力具有较大的生态可塑性，每条根茎的长度及节间长度的生态可塑性则相对较小。 cnki
Numerous potential biological hazards are associated with the importation of propagative material in growing media.
生长介质中的繁殖材料的进口引起的潜在生物危害不胜枚举。 chinafanyi.com
A good domain name can let your enterprise thrifty plenty of propagative costs!
一个好域名能让您的企业节约大量的宣传费用！ mihang
In this paper, the propagative form of one-dimensional solitary waves in splay- mode and bend- mode are discussed in detail.
本文对生物膜中一维斜型波和一维弯曲波的孤立波的传播形式作了较详细的讨论。 cnki
It showed that green wood cutting of woody legumes was still in the stage of propagative approach exploration on certain species.
指出目前豆科树种嫩枝扦插技术研究还局限在对某一树种繁殖途径的探索阶段； cnki
To understand the source of EMI and the propagative way of EMI clearly the key protection of sensitive receiving circuit for EMI can be carried out.
通过对电磁干扰源的明确认识，对电磁干扰引入路径的清楚了解，针对电磁干扰敏感的接收电路进行重点保护。 yidaba