This is done by a carrier molecule, hemoglobin (Hgb); a vehicle (RBC) capable of bringing the intact Hgb to the cellular level; and a metabolism geared to protect both the RBC and the Hgb from damage.

通过血红蛋白(Hgb)这一载体分子来实现；红细胞可在细胞水平携带完好的血红蛋白；其代谢机制可以保护红细胞和血红蛋白免受损害。

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In addition, e-books also highlighted the advantages of their own at carrier, storage and technical level.

此外，电子书籍在载体、存储性和技术等层面上也有着自己突出的优点。

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Charlie laid awake that night, thinking about all The Times he had walked through the long narrow room, below sea level on the aircraft carrier, with the tables where the men packed the parachutes.

当天晚上查理失眠了，想到在潜入水下的航母上，他走过那间长长的狭窄的房间，许多人围着桌子为飞行员打包降落伞。

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Wholesale Internet carrier Level 3 quickly cited the new rules in a fight with Comcast over how much it would pay to stream data to Comcast customers.

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They're just not used to finding everything in one place, let alone guaranteeing that any carrier-level features will work with other phones and providers.

ENGADGET: MetroPCS intros first Rich Communication Services on LTE, touts universal contacts and chat (video)

He says that they can help deliver a superior level of customer service, strengthening the carrier's brand image and differentiating them from competitors flying similar routes.

CNN: Flying chefs serve up fine dining in sky