переходить к
см. тж. затем переходим к; приступать к
• We are coming (now) to the question of heating.
• As one goes to higher and higher bases, numbers become shorter and shorter.
• If we pass on to equations of the second degree, ...
• We (now) turn (our attention) to (the discussion of) the element hydrogen.
Русско-английский научно-технический словарь