The cry had certainly come form one of the chimneys, but as there were so many of them, the fire fighters could not be certain which one it was.
喊叫聲肯定是從煙囪里傳出來的，然而，因為煙囪太多，消防隊員無法確定到底是哪一個。
新概念英語第三冊 Lesson 35 Justice was done

?? 句中詞匯解析

從本句中提取的重要詞匯

certainly ['s?tnli] 詞頻1 詞根: cert
adv. 無疑;當然;確定;肯定;
?? certain確實的+ly副詞后綴，…地 → 確實地，一定地，當然地
"I shall certainly keep a beady eye on his behaviour."
我一定會時刻睜大眼睛提防他的行為。
近義：indeed, indubitably, inevitably, infallibly, assuredly, absolutely 反義：hesitatingly, hesitatively, indecisively, arguably, tentatively, wonderingly
form [f?rm] 詞頻1 詞根: form
n. 形狀，形式;外形;方式;表格; vt. 形成;構成;組織;塑造; vi. 形成，產生;排隊，整隊;
?? form =shape,表示”形狀”
"The noun " mouse " is the singular form of " mice " ."
名詞mouse是 mice 的單數形式.
近義：past, background, record, dossier, antecedents, institute 反義：hypertrophy, misshape, twist, uglify, warp, contort
come [k?m] 詞頻1
vi. 來;開始;出現;發生; vt. 做;裝扮…的樣子;將滿（…歲）; int. 嗨！;
"The time has come for action if these beautiful animals are to survive."
若要使這些美麗的動物能生存下去，現在就要行動起來。
近義：impersonate, perform, personify, portray, represent, stage 反義：leave, absquatulate, retire, retreat, scat, split
fire ['fai?] 詞頻1
n. 火，燃燒物;火災;射擊，發射;熱情; vt.& vi. 開火，射擊;燃燒;引爆炸藥;充滿熱情; vt. <口>解雇;射（箭）;激勵;射出（子彈）;
"They set fire to the city and massacred all the inhabitants."
他們放火燒了這座城市,而且屠殺了所有的居民.
近義：sack, suspend, terminate, boot, discharge, cashier 反義：recruit, retain, contract, employ, engage
certain ['s?:t?n] 詞頻1 詞根: an
adj. 某一;必然的;已確定的; pron. [動詞用復數]某些;
"Federal courts have a certain cachet which state courts lack."
聯邦法院有某種州法院所缺乏的特別的東西.
近義：some, inarguable, indisputable, indubitable, invariable, irrefragable 反義：neither, implausible, improbable, uncertain, unlikely, avoidable

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