He has done it by exploring, by experimenting, by developing his own model of the grammar of language, by trying it out and seeing whether it works, by gradually changing it and refining it until it does work.
出自-2010年6月聽力原文
柯林斯高階英漢雙解學(xué)習(xí)詞典釋義
VERB
提煉;精煉
When a substance is refined, it is made pure by having all other substances removed from it.
例句
Oil is refined to remove naturally occurring impurities.油經(jīng)過提煉去除天然存在的雜質(zhì)。
VERB
改進(jìn)，改善，改良（過程、理論或機(jī)器）
If something such as a process, theory, or machine is refined, it is improved by having small changes made to it.
例句
Surgical techniques are constantly being refined.外科手術(shù)的技術(shù)不斷得到完善。
英英詞典釋義
Noun
1. the process of removing impurities (as from oil or metals or sugar etc.)