Astronomers have ____ tracked the orbital positions of near-Earth asteroids for decades; however, it later bec…

Question

Astronomers have ---- tracked the orbital positions of near-Earth asteroids for decades; however, it later became possible to forecast their trajectories accurately once the underlying gravitational pattern was modelled.

Accepted Answer

painstakingly — 'For decades' ile 'however ... later became possible' birlikte, uzun ve zahmetli bir gözlem sürecini anlatır; 'painstakingly' (büyük emek vererek) bu zorluğu karşılar. 'Swiftly' (hızla) uzun süreyle çelişir. 'Adequately' (yeterince) ve 'persuasively' (ikna edici biçimde) gözlemin niteliğini değil sonucunu değerlendirir.