tâng-sî同時

simultaneously

simultaneously; at the same time; to be at the same time; to be simultaneous; the same time; and; moreover; furthermore

conjunction

English Wiktionary, “同時” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%90%8C%E6%99%82 · confidence: Medium (Wiktionary, Hokkien)