Translation of "precise" into Swahili

Hi poetry is short and precise with most not exceeding 10 lines.

Ushairi wake ni mfupi na wenye ujumbe mahsusi wenye mistari isiyozidi 10.

Such disturbances would affect the clock’s pendulum, whose regular beat was vital to precise timekeeping.

Mambo kama hayo yangeathiri pinduli ya saa hiyo ambayo ilipaswa kusonga bila hitilafu ili kudumisha wakati sahihi.