Although some sightings of UFOs are difficult to explain, most can be explained quite easily.

虽然有些目击 UFO 的现象很难解释，但大多数都可以很容易地解释。

youdao

However, some scientists think although we can make robots move like people, it will be difficult to make them really think like a human.

然而，一些科学家认为，虽然我们可以让机器人像人一样行动，但却很难让它们真正地像人一样思考。

youdao

A word one person finds easy to say, maybe difficult for the next person. Although it's worrying that some people find basic words such as February difficult to say.

“某些人觉得好念的单词对其他人来说却可能并不好念，就像一些人觉得“二月”之类的基本单词很难念。”

youdao

America was much more divided then, although some may find that difficult to believe.

FORBES: George McGovern Passes On - Where Were You In 1972 ?

The drug certainly seems to work in at least some patients, although it is difficult to predict who will benefit.

FORBES: AstraZeneca's Big Green Light

However, the transition was difficult, and although some countries like the Czech Republic and Slovenia were able to overcome the early years of transition, becoming the prosperous democracies that they are now, some others eventually adopted new types of autocracies.

CENTERFORSECURITYPOLICY: Russia extends a helping hand to Chavez