radical

相關對話：

1. I don't belong to the school of thought that favours radical change.
   我不屬於激進派。
2. Radical political views.
   激進的政治觀點
3. Ted is a fire-eating radical.
   泰德是個咄咄逼人的急進份子。
4. They called for a radical reform of our tax system.
   他們要求對稅收制度進行根本改革。
5. The talks are aimed at radical reductions in the level of weapons.
   那些會談都以大幅度裁減軍備為目標。

英文解釋：

名詞 radical:

1. (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
   同義詞：group, chemical group
2. an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule
   同義詞：free radical
3. a person who has radical ideas or opinions
4. a character conveying the lexical meaning of a logogram
5. a sign placed in front of an expression to denote that a root is to be extracted
   同義詞：radical sign
6. (linguistics) the form of a word after all affixes are removed
   同義詞：root, root word, base, stem, theme

形容詞 radical:

1. (used of opinions and actions) far beyond the norm
   同義詞：extremist, ultra
2. markedly new or introducing radical change
   同義詞：revolutionary
3. arising from or going to the root
4. of or relating to or constituting a linguistic root
5. especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem
   同義詞：basal

radical

詞型變化：

名詞:radicalness 副詞:radically 

字典網

詞意辨析：

basic, essential, fundamental, radical, vital

這些形容詞均有“基本的，基礎的”之意。
basic: 普通用詞，指明確、具體的基礎或起點。
essential: 語氣比basic和fundamental強，強調必不可少，暗含某物如缺少某部分，則失去本質特徵的意味。
fundamental: 書面用詞，不如basic使用廣泛，側重指作為基礎、根本的抽象的事物。
radical: 著重指事物的根本或其來源。
vital: 正式用詞，側重指維持生命、活力必不可少的，或生死攸關的。