present indefinite

At present, however, the researches about the healing mechanism of the combined radiation-wound injury ( CRW) were limited to the processes of wound healing. The effect of radiation-induced immunomodulation function damage on wound healing is still indefinite.

然而，目前对放创复合伤难愈机制的研究仅限于创伤愈合过程的研究，而辐射所致机体免疫调节功能损伤对创伤愈合的影响尚不明确。

At present, researches on the geodynamical background of the ground fissures in Xi' an city are few at present, and the relationship between the geophysical background and the geological structures in the deep is also indefinite.

目前，西安地裂缝形成的深部地球动力学背景研究较少，深部地球物理场与深部构造的关系也不够明确。

I think the present indefinite tense is the easiest tense of all. Do you know what it means?

我想一般现在时是所有时态中最容易的，你知道它的含义吗？

Revising the Present/ Future/ Past Indefinite Tense and the Present Continuous Tense.

复习一般现在/将来/过去时和现在进行时。

Gray prediction is a gray model based on the previous or present, known or indefinite information so that the changing trend of the system can be determined and theoretical basis be provided for planning and decision.

灰色预测是根据过去的及现在已知的或非确定的信息建立的一个从过去引申到未来的灰色模型，从而确定系统未来发展变化的趋势，并为规划、决策提供依据。