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Only if it is concrete filled and additional insulation has to be installed a plasterboard lining is necessary.

仅是在填充混凝土又额外加隔绝材料时，才需要石膏板衬墙。

For example, hovering over a part of a scene could open a ToolTip-like menu that lets users select one or more overlapping objects (this menu wouldn't be necessary in the simple case of one unambiguous object). If individual facets, vertices, or edges can be selected, each should hint at its pliancy as the mouse rolls over it.

例如，当掠过画面的某一部分时，可以打开一个类似菜单的工具提示，让用户选择一个或多个重叠的对象（这种菜单对于只有单个清晰对象的简单情况来说是不需要的），所有可以单独选择的平面、顶点或边在鼠标经过时都应该有受范性提示。

He spoke in a strange northern accent; his thoughts being turned inwards upon himself, his eye on his iron charge, hardly perceiving the scenes around him, and caring for them not at all: holding only strictly necessary intercourse with the natives, as if some ancient doom compelled him to wander here against his will in the service of his Plutonic master.

他说话时带有奇怪的北方口音；他心里只管想着自己的心事，他的眼睛只管照看自己的铁机器，而对周围的景物差不多看也不看，毫不关心；只有在特别必要的时候，他才和当地人说几句话，仿佛他是在古老的命运的强迫下，不得不违背自己的意愿漂泊到这里，为这个地狱之王一样的主人服务。

Lung biopsy is not absolutely necessary for diagnosis of MTX pneumonitis if proposed criteria are applied appropriately.

若能适当使用MTX的肺炎诊断准则，肺部切片对MTX肺炎的诊断并非绝对需要。

This is particularly necessary if you have a list of pointers

这是特别必要的，如果你有一个指针列表

If pollination efforts are quite successful, it may be necessary to thin the fruit.

如果授粉努力，也做得相当成功，它可能要薄果。

Q11: If the autonomous machine steal the pot / cheese from opponent basket, is that necessary to place the stolen pot / cheese to its own basket?

如果自动机器人从对方篮里拿取了罐或奶酪，必须放进自己的篮里吗？

It's necessary to practise a lot if you want to learn english well.

要学好英语，大量的练习是必要的。

Article 59 If the CSRC deems necessary, it may make presentment to the senior managerial personnel of the futures exchange.

第五十九条中国证监会认为有必要时，可以对期货交易所高级管理人员实施提示。

If it happens, immediate resuscitation is necessary, including pressor agents administration and cardiac massage.

一旦发生严重的心搏徐缓或心跳停止，立即急救是必要的，包括给予强心升压药物及心外按摩。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。