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Synthetic or manufactured is now often recommended in the academic/technical literature as a replacement for the gendered manmade. If you're certain that the protein was designed rather than evolved, you could use "The synthetic structure..." However, it sounds like you aren't certain. In this case, you could use "The synthetic-appearing ...


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You can use the expression "to strain one's facial muscles". (ref. 1) The effort strained his facial muscles. She returned the smile. “Just fine. I have the latest data on compression strength and fracture resistance for the honeycomb structure. (ref. 2) Kuster~Laap strained his facial muscles searching his memories. »I'm not very familiar with ...


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