used to indicate being in the process of a particular action, treatment, or change
下で
at the very edge or threshold of a particular state, situation, or event, often with the implication of facing a critical or crucial moment
瀬戸際に
very close to a particular state, situation, or event, often with the implication that it is about to happen or reach a certain point
まさに
used to express the state of being influenced or affected by something, such as a substance or external factor
の上で
used to indicate the state of abstaining from or being free from the effects or influence of that substance
なし
used to indicate being subject to the authority, control, or rule of someone or something
の下で
used to express a position of influence, control, or authority over a person, group, or situation
上に