That trip was a difficult but valuable lesson.

那趟旅行是艰难却又宝贵的一课。

youdao

In the early days of underground coal mining, pit canaries often had short but valuable lives.

早期地下采煤的时候，矿井中的金丝雀常常拥有短暂而有价值的一生。

youdao

Mountaintop mining involves a highly destructive practice of blasting through hundreds of feet of mountaintop to get at thin but valuable seams of coal

山顶采矿包括炸毁数十米山顶，获取稀薄而珍贵煤层的行动，具有极高的破坏性。

youdao

But it was the Spanish explorer Hernando Cortes who understood that chocolate could be a valuable investment.

VOA: special.2010.02.17

It'll allow you to tackle interesting problems I'll have you to write from scratch, but it does mean that this skill here is going to be really valuable.

它会让你处理有趣的问题,我会让你绞尽脑汁的编写，但是这一点意味着,这个技能非常宝贵。

麻省理工公开课 - 计算机科学及编程导论课程节选

But it's a valuable thing. It says, in each case, I return some useful value from this procedure.

但是这就是变量，是在每个例子中，我从这个程序中返回了一些有用的值。

麻省理工公开课 - 计算机科学及编程导论课程节选

It also takes time to build online networks through the organic but valuable spread of friend-of-a-friend connections.

CNN: Is Gingrich's 'NewtHampshire' site too little, too late?

He managed modest but valuable achievements, such as helping to open a job bank and remove asbestos from public housing.

ECONOMIST: The candidates at home (2)

Police began to interview neighbors and conducted searches 10 days after his disappearance, but valuable time had been lost, Kelly Jolkowski said.

CNN: Missing teen's parents help other families cope