Effective length of receiving an-tenna
[电] 接收天线有效长度
🧩 词语组成解析
effective
[ɪ'fɛktɪv]
adj. 有效的;起作用的;实际的，实在的;给人深刻印象;
n. [军]现役兵额，有生力量，精兵;
ef出+fect做，制作 +ive形容词后缀 →做出来的 → 有效的
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];
receiving
[ri'si:viŋ]
n. 接受;收款，收货;
adj. 接受的;
v. 收到( receive的现在分词 );接到;接纳;接待;
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
🗣️ 情景例句
The rules ought to be observed.
这些规则就予以遵守。
It's a pain in the neck.
那真是件麻烦事
I was proud that we had come across something that was completely unknown and valuable and,
让我感到自豪的是，我们在无意中发现了不为世人所知的、有价值的东西，