volatile flavour concentrate

例句：

1. 1.The gas was found to be volatile in nature.
   这种气体被发现具有易挥发的性质。
2. 2.Volatile compounds are those that can change state when exposed to heat or pressure.
   易挥发化合物是指在受热或压力时可以改变状态的物质。
3. 3. The volatile nature of the substance meant it could not be stored safely for long periods.
   该物质的易挥发性质意味着它不能长时间安全储存。