須 - ought, by all means, necessarily

indispensable; essential; requisite; required; compulsory; necessary

essential condition

essential amino acid

required entry (e.g. in online forms)

broadnose sevengill shark (Notorynchus cepedianus, species of circumglobal cow shark with 7 gill slits)

moment; instant; short amount of time

Mount Sumeru (believed to be the centre of the Buddhist world)

gosu porcelain

dais for a Buddhist image

indispensable case

moo shu pork

cobia (Rachycentron canadum); sergeant fish