Many believe chocolate has the power to lift mood, and the US team say this may be true, although scientific proof for this is lacking.

虽然科学证据不足，但许多人相信吃巧克力可以提高情绪。美国队说这也许是正确的。

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Carrying on reliability analysis to brake system of explosion-proof hydraulic lift and exploring the way of improving its reliability in order to enhance hydraulic lift working reliability.

通过对防爆液压提升机制动系统进行可靠性分析，探讨提高其可靠性的途径，进而提高提升机的工作可靠性。

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