Examples of benefits or costs of the current concentration wave are scanty 目前证明这股合并浪潮是带来利还是弊的实例并不多。
2.
Rich works on the full spectrum of operating systems supported by domino with a current concentration on solaris Rich的工作涉及domino支持的所有操作系统，当前集中于solaris操作系统。
3.
Pre - industrial levels of greenhouse gases in the atmosphere were 280ppm co2 equivalent co2e . the current concentration is 430ppm co2e 工业革命前大气中的温室气体含量是相当于280ppm的二氧化碳含量，而目前的浓度相当于430ppm的二氧化碳含量。
