1·那是1840年。
The year was 1840.
—— 《柯林斯英汉双解大词典》
2·关于小儿麻痹症的首篇权威研究报告发表于1840年。
The first authoritative study of polio was published in 1840.
—— 《柯林斯英汉双解大词典》
3·1840年，摄影技术再次得到了发展。
In 1840, photography was developed once more.
4·然而，它确实在其他意义上有更早的起源。它是hallo的变体，可追溯到1840年，是一种表示惊讶的叫声。
It does, however, have earlier origins in other senses. It is a variant of hallo, which dates to 1840 and is a cry of surprise.
5·特别是《玛丽·巴顿》这本书的前几章，对19世纪40年代英国工业时代工人所受的苦难做出了感人的回应。
Mary Barton, particularly in its early chapters, is a moving response to the suffering of the industrial worker in the England of the 1840's.
6·迪恩继续间歇性地在这个地方潜水直到1840年，期间又找到了几支枪、两张弓、各种木材、一个水泵的一部分和其他各种小物品。
Deane continued diving on the site intermittently until 1840, recovering several more guns, two bows, various timbers, part of a pump and various other small finds.
7·1840年至1880年间首次发现并研究了这种被称为蜥脚类动物的巨型食草恐龙的骨骼化石，为成年型恐龙的巨大特征提供了证据。
Fossil bones of the huge herbivorous dinosaurs known as sauropods were first discovered and studied between 1840 and 1880, providing evidence for the gargantuan dimensions of the adults.
8·农业面积：1690(千公顷)。
Agricultural area: 1840 (1000 Ha).
9·1840年以前，奥克兰是首都。
Auckland was the capital until 1840.
10·康内斯托加式宽轮篷车的巅峰时段是1820至1840年间。
The peak years of use for the Conestoga wagons were from 1820 to 1840.