词组短语
同近义词辨析
particle, atom, grain, speck, molecule
这组词都有“粒，微粒”的意思，其区别是：
particle指任何物质的微粒，引申指任何小的部分。
atom指元素的最小粒子，其体积比molecule小。
grain通常指能为肉眼清楚看到的颗粒，比上述几个词所表“粒”的体积大。
speck一般指“微点”或“微粒”，可引申指“斑点、污点”。
molecule指物质中保持原物质的一切化学性质，能独立存在的最小微粒，即分子。
双语例句
用作名词(n.)
- You can't eat bread covered with dark specks.
你可不能吃满是黑斑的面包啊。 - I've got a speck in my left eye.
我左眼里掉进一颗灰尘。 - There's not a speck of dust in their house.
他们的屋里没有一点儿灰尘。 - He looked at a speck on the window glass.
他看着窗玻璃上的一个污点。 - There is not a speck of doubt about it.
那件事一点疑问也没有。 - The debate aroused not a speck of public interest.
这次争论没有引起公众丝毫的兴趣。
权威例句
Graft-versus-leukemia reactions after bone marrow transplantation.Salmonella mutagenicity tests: II. Results from the testing of 270 chemicals.Protein and cell membrane iodination with sparingly soluble chloroamide, 1,3,4,6-tetra chloro-3a,6a-Diphenylglycoluril.Biochem. Biop...Salmonella mutagenicity tests: III. Results from the testing of 255 chemicalsProspects for LED lightingAn update of controlled physical activity trials in cancer survivors: a systematic review and meta-analysisLocal delivery of paclitaxel to inhibit restenosis during angioplasty of the leg.Bone marrow transplantation for Philadelphia chromosome-positive acute lymphoblastic leukemia.Retinoic acid receptors and retinoid X receptors: interactions with endogenous retinoic acids.Interaction, growth, and ordering of epitaxial graphene on SiC{0001} surfaces: A comparative photoelectron spectroscopy study
