Free-electron theory of metals
[电] 金属的自由电子理论
🧩 词语组成解析
free
[fri]
adj. 自由的;免费的;免税的;空闲的;
adv. 免费地;自由地，无拘束地;一帆风顺地;
vt. 免除;释放;使自由;解救;
electron
[i'lektrɔn]
n. 电子;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
五金
🗣️ 情景例句
Saving them for today?
留着等今天？
Better half an egg than empty shell.
半只蛋也比空壳好。
Water streamed in torrents over its sides with such force that it set up a huge wave in the canal.
波浪从盘子两侧急涌而出，在运河里掀起一股大浪。