propagate
/ˈprɒpəgeɪt/verb
with obj.
1
- breed specimens of (a plant, animal, etc.) by natural processes from the parent stock（动植物等）繁殖; 使繁殖：
try propagating your own house plants from cuttings.
试着通过插枝繁殖自家的室内植物。
1.1
- no obj.(of a plant, animal, etc.) reproduce in such a way（动植物等）繁殖, 增殖：
the plant propagates freely from stem cuttings.
这种植物通过枝干扦插便可得以繁殖。
1.2
- cause (something) to increase in number or amount使（某物）在数量上增加：
operational error includes those errors propagated during the digitizing process.
运算错误包括数字转换过程中增多的错误。
2
- spread and promote (an idea, theory, knowledge, etc.) widely传播（观念、理论、知识等）：
the French propagated the idea that the English were violent and gluttonous drunkards.
法国人过去传播这样的观念：英国人是狂暴、贪婪的酒鬼。
3
- with obj. and adverbial of direction transmit (motion, light, sound, etc.) in a particular direction or through a medium传送, 传播（运动、光线、声音等）：
electromagnetic effects can be propagated at a finite velocity only through material substances
电磁效应只能通过物质材料以一定的速度传送
as adj. propagated a propagated electrical signal.电播信号。
3.1
- no obj.(of motion, light, sound, etc.) be transmitted or travel in such a way（运动、光、声音等）传播, 扩展：
a hydraulic fracture is generally expected to propagate in a vertical plane.
水力断裂通常预计会沿纵面扩展。
派生词
propagation
nounpropagative
adjective词源
late Middle English: from Latin propagat- 'multiplied from layers or shoots'，from the verb propagare; related to propago 'young shoot' （from a base meaning 'fix'）.