coward, timid person

戸川: a surname, Togawa

once

no matter whether

how

feel like doing; look like; appear to / seem; appear; tend to / be willing to; feel like; have a tendency to / want to; would like to; / want; would like; feel like; tend to *Usually written using kana alone; esp. [欲しがる]

conjunction that expresses simultaneous actions, state, or conditions / conjunction that expresses contrast or contradiction

incidentally; while doing something else

take the opportunity to do, on the occasion of, while being at it

化学工学: chemical engineering