To enter Class B airspace, such as an approach to a major metropolitan airport, an explicit ATC clearance is required.

需要持有明确的空中交通管制许可才能进入B类空域，如接近一个大都会机场。

youdao

The other major requirement is what we call appendix B. appendix B is the quality assurance criteria.

另一个重要的要求就是，我们叫它为附录b，附录B是，质量保障标准。

youdao

B: Ok. Well, you know, all major budget decisions must be approved by our CEO and the financial offer.

好的，你知道，所有主要的预算决策需要经过首席执行官及财务主管的批准。

youdao

Local emission-free electric vehicles such as the new B-Class Electric Drive are a major part of the Mercedes-Benz strategy for sustainable mobility.

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Moreover, as I think you know, plan B represents -- or would represent a major step backward in these discussions and a major step backward for the American people.

WHITEHOUSE: Press Briefing

Her detailed account quickly made the best-sellers' lists in major bookstore chains, and continues to clim b steadily up the ranks in the non-fiction category.

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