When you have to make a big decision, particularly in front of a large number of people, you must be discreet.
在你面对很多人要做出重大决定时，你必须十分谨慎。
Researches on energy conservation in building, especially in residential buildings, are urgent particularly in front of the world energy crisis.
建筑节能，尤其是居住建筑的节能研究在世界性的能源危机面前尤为迫切。
Researches on energy conservation in building, especially in residential buildings, are urgent particularly in front of the world energy crisis.
建筑节能，尤其是居住建筑的节能研究在世界性的能源危机面前尤为迫切。
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