ing-kai應該

ought to

ought to; should (used as an auxiliary verb); theoretically should [be]; to deserve it; serve someone right

English Wiktionary, “應該” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%87%89%E8%A9%B2 · confidence: High (Wiktionary, PH/Quanzhou/Jinjiang)