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The phrase "are two main methods" is correct and usable in written English.
It can be used when introducing or discussing the primary approaches or techniques in a particular context or subject matter.
Example: "In our research, we found that there are two main methods for data collection: surveys and interviews."
Alternatives: "there exist two primary methods" or "two key methods are available".
Exact(55)
There are two main methods.
There are two main methods to assess whether a person has prediabetes.
There are two main methods for obtaining music online: peer-to-peer file-sharing programs and legal subscription services.
In open water, there are two main methods for dealing with spilled oil.
Besides increasing the ratio of debt to equity in a firm's balance sheet, an idea that gained popularity in the 1980s, there are two main methods: incentives (such as share options) that align managers' and owners' interests; and better monitoring of managers.True, neither of these is perfect.
There are two main methods to identify SOMs.
Similar(5)
There are three main methods for booking hotels.
There are four main methods of committing FGM, according to the World Health Organisation, and Abu-Dayyeh said the practice of removing a girl's clitoris and labia was probably the most common in Egypt.
Arc/graphite, laser ablation and CVD are three main methods for the production of carbon nanotubes (CNTs).
Generally, there are three main methods to prepare graphene materials: micromechanical exfoliation of graphite[16], chemical vapor deposition[27], and reduction of graphene oxide (GO)[28].
There are three main methods for predicting the biological activity of compounds: grouping approaches such as read across, (Quantitative) Structure Activity Relationships ((Q SARs) built using machine learning/statistical modelling and expert systems.
More suggestions(15)
are two principal methods
are two main measurements
are two major methods
are two main mechanisms
are two primary methods
are two main processes
are two main principles
are two fundamental methods
are two main steps
are two main methodological
present two main methods
are two main approach
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are two main limitations
are two main points
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com