"begin by clarifying" is correct and usable in written English.
You can use it when you want to make a clear statement or explanation. For example, "Before we start, let's begin by clarifying our expectations for this project."
Let's begin by clarifying what we mean by sovereignty.
You should begin by clarifying what level of protection you already have in place.
We begin by clarifying what we mean by AI-generated art, distinguishing it from art that is created by humans using digital creation and editing software.
We begin by clarifying important terms of the trade by looking at Integrated Circuits (ICs) from five different perspectives, namely (1) circuit complexity, (2) functionality and markets, (3) fabrication depth, (4) design process, and (5) business model.
Begin by clarifying the qualities that set the company apart in the first place.
But let us begin by clarifying terms (see Lloyd 1992, 2001).
The book begins by clarifying what ecological speciation is, its alternatives, and the predictions that can be used to test for it.
It begins by clarifying what cyber-attacks are and how they already are regulated by existing bodies of law, including the law of war, international treaties, and domestic criminal law.
It begins by clarifying definitional ambiguities in the literature on cyber attack, setting forth a definition that focuses on computer networks as the instruments, rather than objects, of attack.
Adams began by clarifying the mode of action of aspirin, which had been in use for pain and fever since 1900 but with no clear idea of how it worked.
The article begins by clarifying vocabulary needed to describe differences in health, whether they are observed across places and social groups, or among individuals in a single population.
