He says there's a golden opportunity for peace which must be seized.

他说必须抓住这个谋求和平的黄金时机。

《柯林斯英汉双解大词典》

In medicine, one is faced with a problem which must be thoroughly analyzed before a solution can be found.

在医学上，人们面临一个问题，在找到解决办法之前必须对这个问题进行彻底的分析。

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One is randomly chosen to propose how a sum of money, known to both, should be shared between them; only one offer, which must be accepted or rejected without negotiation, is allowed.

其中一人被随机挑选出来，提出双方都知道的一笔钱应该如何分配；只允许有一个报价，必须被接受或拒绝，没有谈判。

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Hatoyama is expected to be formally elected prime minister in a special session of parliament, which must be held within 30 days.

VOA: standard.2009.08.31

All right. Second question: or maybe a better way of saying this, and the general format you're likely to see here is, a test involving a variable name, which must be initialized outside of the loop, and which interior to the loop gets changed, so that the test is going to change.

好，第二个问题：,换种更好的方式来说吧，你们通常喜欢的,方式是，这个测试涉及到一个变量名字，变量在循环外已经被初始化，然后循环内部会改变这个变量的值，因此测试结果会改变。

麻省理工公开课 - 计算机科学及编程导论课程节选

There is a plurality of solutions that conform to the boundary conditions, which is that the system must be bound.

这有许多解决方式,来遵守这个有界条件，那个系统必须是有界的。

麻省理工公开课 - 固态化学导论课程节选

The British Embassy will administer the grant, which must be spent in line with departmental objectives.

BBC: NEWS | South Asia | Nepal gay group launches journal

The minister said all waste was a valuable resource from the planet which must be reused.

BBC: Zero Waste Plan debate

There are international guidelines which must be followed when any animal is being reintroduced.

BBC: Beavers believed to be on loose