Currently, most ingredients must be changed to a paste before a printer can use them, and the printing process is quite time-consuming because ingredients interact with each other in very complex ways.

目前，大多数原材料在放入食物打印机之前需要弄成糊状，由于各食材会以一种复杂的方式相互作用，整个打印过程也很耗时。

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This situation must be changed.

这种情况必须改变。

youdao

The structure must be changed.

金融体系的结构必须改变。

youdao

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

EU. All parties agree it must be changed, but they have not yet been able to settle how.

ECONOMIST: Bosnia ten years on

But it must be changed and changed quickly before any more money is spent on any of these schemes.

FORBES: All High Speed Rail Programs Must be Cancelled and the Numbers Calculated Again

It is tax abuse in fact and the law must be changed to prevent people from doing such horrible things.

FORBES: Vodafone and the Bureau of Investigative Journalism