precautionary

adj done as a precaution; preventive 防备的; 预防的: precautionary measures 预防措施.

pre-package, Pre-Raphaelite, pre-record, pre-recorded, pre-school, pre-set, pre-shrunk, pre-stressed, pre-tax, pre-war, preach, preacher, preachy, preamble, prebend, prebendary, precarious, precariously, precariousness, precaution, precede, precedence, precedent, precedented, preceding, precentor, precept, preceptor, precession, precinct, preciosity, precious, preciously, preciousness, precipice, precipitant, precipitate, precipitately, precipitation, precipitous,