This little poem is from Giuseppe Gatti's Sales Poetici, Proverbiales, et Iocosi, published in 1703.
Cetera praetereunt; nostra haec quoque praeterit aetas,
Non reditura, instar praetereuntis aquae.
The vocabulary is keyed to the DCC Latin Vocabulary list. There are two words in this poem that are not on the DCC list:
Other times have passed away; this our time is also passing away, not to return, like flowing water.
instar: image, likeness
praetereō, praeterīre: pass, go by
aetās -tātis f.: age, time of life
aqua -ae f. water
cēterus -a -um: the others, the rest; adv. cēterum: for the rest, in addition, however, that may be
hic haec hoc: this; hōc: on this account
noster nostra nostrum: our
quoque: also, too
redeō -īre -iī -itum: go back, return