At one time it was thought that these matrix grains might be pristine nebular dust, the sort of stuff from which chondrules and inclusions were made.

曾经有人认为，这些基质颗粒可能是原始的星云尘埃，即形成陨石球粒及其内含物的物质。

youdao

Such a person seems thus doubly trapped: incapable of knowing that he is in the Matrix, and even incapable of successfully expressing the thought that he might be in the Matrix!

这样一个人看上去于是就好像是被困在了双重陷阱中：不可能知道自己身处Matrix之中，而且甚至不能正确表达自己有可能处于Matrix之中这一想法！

youdao

The portion of collagen protein incorporated in the graft is thought to be responsible for binding fibroblasts and osteoblasts in the material matrix.

研究表明，移植物中的胶原蛋白部分与材料基质中的成纤维细胞和成骨细胞的结合密切相关。

youdao

She suggests that yoga should ultimately be thought of as a matrix spanning physical to mental, lofty to ordinary, and everything in between.

FORBES: The Great Yoga Debate: Has Yoga Sold Its Soul?

On December 5th, Direct Merchandise Marketing (DMM) released a long-awaited statement that was supposed to explain just what had gone wrong in shipping its Matrix One tablet, a device we thought we might never see.

ENGADGET: Ginsu knives, psychic hotlines and a $90 tablet: the story behind the Matrix One (update: more details)