adj.不容置疑的，毋庸置疑的，明确无疑的

The importance of education in shaping a nation's future is indubitable.
教育在塑造国家未来中的重要性是毋庸置疑的。
His dedication to the cause was indubitable, as evidenced by his tireless efforts.
他对这一事业的奉献精神无可置疑，这从他不懈的努力中可以明显看出。
The indubitable truth of her innocence was proven when new evidence came to light.
随着新证据的出现，她清白的不容置疑的事实得到了证明。
The company's success can be attributed to their indubitable commitment to innovation.
公司的成功可归功于他们对创新的无可置疑的承诺。
Her talent as a musician is indubitable; every performance leaves the audience mesmerized.
她作为音乐家的才华是毋庸置疑的；每次演出都让观众着迷。
The indubitable link between smoking and lung cancer has been scientifically established.
吸烟与肺癌之间无可争议的联系已被科学证实。
The historical significance of the Great Wall of China is indubitable, attracting millions of visitors each year.
中国长城的历史意义不容置疑，每年吸引数百万游客。
His expertise in the field of quantum physics is indubitable, making him a respected figure worldwide.
他在量子物理学领域的专业水平无可置疑，使他成为全球受尊敬的人物。
The indubitable beauty of the natural landscape inspired countless poets and painters throughout history.
自然景观的无以复加之美激发了历史上无数诗人和画家的灵感。
The effectiveness of the vaccine in preventing the disease is indubitable, as demonstrated by extensive clinical trials.
疫苗在预防疾病方面的有效性是无可置疑的，这一点已在广泛的临床试验中得到证明。