例句與造句

1. unending subclassifications of tumors and morphologic grading have generally proved to be a sterile pathologic exercise .
   對(duì)腫瘤進(jìn)行無(wú)止境的分類和形態(tài)學(xué)分級(jí)證明都是一種毫無(wú)效果的病理學(xué)活動(dòng)。
2. several subclassifications have been proposed : simple chronic bronchitis describes a condition characterized by mucoid sputum production; chronic mucopurulent bronchitis is characterized by persistent or recurrent purulence of sputum in the absence of localized suppurative diseases such as bronchiectasis; chronic bronchitis with obstruction deserves a separate classification characterized by presence of airway obstruction as assessed by the used of the forced expiratory vital capacity maneuver; and chronic asthmatic bronchitis
   它可以分為以下幾種類型：?jiǎn)渭冃月灾夤苎祝涮卣鳛榭日骋盒蕴?；慢性粘液膿性支氣管炎，其特征是反?fù)的或持續(xù)的咳膿痰，但肺部并無(wú)化膿性病變，如支氣管擴(kuò)張；慢性支氣管炎伴阻塞，其特征為用力呼氣肺活量測(cè)定時(shí)有氣道阻塞的表現(xiàn)；慢性哮喘性支氣管炎，其特征是患者有長(zhǎng)期的咳嗽及咯痰史，后來(lái)肺部出現(xiàn)哮鳴者，因此與哮喘伴慢性氣管阻塞的病人不同。
3. It's difficult to find subclassifications in a sentence. 用subclassifications造句挺難的