选择供应商时，在考虑到降低成本，或者说，将成本维持在较低的水平的同时，也要关注这样能否保证速率、质量与弹性。

When choosing a supplier, focus should be on developing velocity, quality and flexibility while at the same time reducing costs or maintaining low cost levels.

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多呼入的氧气有助于放松身体，平稳呼吸，降低你心脏跳动的速率，从而保证你能够冷静的思考。

This extra oxygen flow will relax your body, clam your breathing, slow your heart rate, and allow your brain to resume rational thought.

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重要的是保持化学计量数正确，以保证每种物质的速率，能够被正确表示。

But the important thing is to keep track of stoichiometry so that the rate as it pertains to each constituent is accounted for correctly.

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