How to say these vases must be used carefully. in Japanese
1)
これらこれら(korera) (pn,adj-no) theseのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question花瓶花瓶(kabin) (n) vaseはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh注意注意(chuui) (n,vs) caution/being careful/attention/warning/adviceしてして(shite) (prt) by/as/indicates patient of a causative expression/acts as a connective/adds emphasis/and then使用さno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbれなければならno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbないない(nai) (aux-adj) not/emphatic suffix。。(。) Japanese period "."
