It is usually oral but sometimes it will be in written form.

它通常是口头上的，有时候则是书面的。

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Usually an oral presentation that uses questioning techniques to determine what the customer wants and then presenting them with the best options based on their responses to the questions.

通常是口头介绍，使用提问技巧，以确定客户需要什么，然后与他们提出的问题的答复根据他们的最佳选择。

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Oral tetracycline usually controls the infection.

口服四环素通常可以控制这类感染。

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Polymyalgia rheumatica is usually treated with a low dose of an oral corticosteroid, such as prednisone.

CNN: Polymyalgia rheumatica

It is racing with Novartis to produce the first oral therapy for MS. Ivax is also developing a new epilepsy drug and an oral version of the cancer drug Taxol, which must usually be injected.

FORBES: Teva Takes On Novartis

Gingivitis usually clears up after a thorough professional cleaning as long as you continue to follow a program of good oral hygiene at home.

CNN: Gingivitis