The research of how to prevent, handle the concrete crack has been in progress.
如何防止、处理混凝土裂缝的研究一直在进行中。
The controversy over Intelligent Design has been in progress since its naissance.
智能设计论自其诞生以来一直颇受争议。
The controversy over Intelligent Design has been in progress since its naissance .
智能设计论自其诞生以来一直颇受争议。
This research has been in progress since 1978 and has yielded many positive results.
这项研究自1978年以来一直在进行，并已取得了许多实际成果。
This research has been in progress since 1978 and has yielded many positive results.
这项研究自1978年以来一直在进行，并已取得了许多实际成果。
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