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- Experience must be buy. 要得经验，须付代价。
- Experience must be bought. [谚]要取得经验，须付出代价。
- Proof of qualification or experience must be sighted. 证明资格或经验必须是短视的。
- The equipment must be bought from a supplier approved by the company. 设备必须从公司认可的供应商那里购买。
- The chemicals used in the experiment must be very pure. 用于这一实验中的药品必须很纯。
- This experiment must be carried out under constant temperature. 这个实验一定要在等温的条件下进行。
- experience must be bought 吃一堑,长一智。
- Experiences must be processed and reprocessed in order to become long-term memories. 过往的体验必须经过加工和再加工才能成为长久的记忆。
- Blood donated without compensation must be used for clinical purposes and must not be bought or sold. 第十一条无偿献血的血液必须用于临床,不得买卖。
- New snow shovels need to be bought; snow blowers, the winter cousins of lawn mowers, must be checked out. 还需要买新的宽宽的雪铲；作为锄草机冬季同族的吹雪机，也必须检查停当。
- He must be fielded exactly as presented here, and no extra equipment, honours or magic items can be bought for him. 他必须指定位置放置，并且他不能额外的装备，头衔以及魔法物品。
- Because of the inaccessibility of others' mental experience, it is presumed that the process of perspective framing in reporting others' experience must be different from the first person narration. 笔者对他人的经验感知进行表述时，由于他人经验的低可及性，视角框架的选取、构建肯定与第一人称不同。
- It must be difficult to play various personae in the same movie. 在同一个电影中扮演不同的角色肯定不容易。
- The law provides that these ancient buildings must be preserved. 法律规定，这些古老的建筑应该保存。
- The work must be finished in one way or another. 这件事必须设法做好。
- It is a fact that must be faced up to. 这是必须正视的事实。
- She must be made to comply with the rules. 必须强迫她遵守这些规则。
- Experiment must be designed to yield results for the good of society, unprocurable by other means of study. 只有用其它的研究方法不能办到，才可以进行人体实验。而人体实验的结果一定是有利于人类社会。
- All bookings must be made by post. 所有预约都必须用信函形式。
- Experiments must be designed so that we can always figure out the range of parameters for which the theory is actually being tested. 实验的设计应使我们总是能计算出理论实际被测试时的参数范围。
