世界其他地方的许多农民由于要面对更高的温度已经开始去找寻这些限度所在。
Many other farmers around the world are already starting to find out where those limits lie as they confront higher temperatures.
而且在某个限度以内，温度越高，蚊子的成熟就越快。
Moreover, up to a point, higher temperatures cause the mosquitoes to mature faster.
活塞由于燃气而发热，假如要使金属的温度保持在安全限度以内就必须散热。
The piston absorbs heat form the gas, and this heat must be carried away it the metal temperature is to be held within safe limits.
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