Sometimes the secrecy goes to such an extent that the whole nature of the research cannot be mentioned.
有時，保密竟達到了這樣的程度，即連研究工作的整個性質都不準提及。
新概念英語第四冊
Lesson 15 Secrecy in industry
?? 句中詞匯解析
從本句中提取的重要詞匯
adv. 有時，間或;時而;
?? sometime某一時間的+s表副詞 →有時
"Even friends disagree sometimes."
即便是朋友有時也有分歧。
近義：occasionally, oft, once, rarely, betweentimes, betweenwhiles
反義：invariably, periodically, repeatedly, steadily, usually, consistently
n. 程度;長度;廣大地域;扣押;
?? ex出+tent伸展；擴大→伸出去的范圍 → 范圍；程度
"It is difficult to assess the full extent of the damage."
損失情況難以全面估計。
近義：largeness, magnitude, size, bigness, limits, outreach
n. 自然;天性;天理;類型;
?? nat出生的+ure狀態→出生狀態→天性
"the adversarial nature of the two-party system"
兩黨制的對抗性
近義：milieu, surroundings, circumambiency, medium, ecosystem, environment
n. 研究，追究;探討，探測;調查;探索;
vi. 做研究;探究;（從市場調研中）得出所預測的結果;
vt. 從事…的研究，為…而做研究;
?? re(again)+search(to go round)→研究；調查
"Recent research has cast new light on the causes of the disease."
最新研究使人們進一步了解了這種疾病的起因.
近義：inquire, investigate, ask, probe, sleuth, study
n. 保密;保密能力;秘密（狀態）;守秘密;
"the need for absolute secrecy in this matter"
在這件事情上絕對保密的必要性
近義：secret, stealthfulness, stealthness, obscurity, privacy, reconditeness
反義：homeliness, honesty, naivete, openheartedness, openness, outrightness