VIVUS does not undertake an obligation to update or revise any forward-looking statement.
VIVUS不承担义务更新或修改任何前瞻性陈述。
Nor would we undertake an obligation to concert US-Soviet actions toward third countries.
我们也不承担协调美苏针对第三国行动的义务。
They have assumed a responsibility which they, naturally, are under an obligation to undertake, but which they carry out with commitment and care.
这些责任是他们所需要承担的义务，但他们仍用满腔关怀去完成。
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