He came and went during these months, arriving unheralded and leaving without saying good-by.
在这几个月里,他经常来来去去,来时不预先通报,去时也不说再见。
IELTS Reading
Consider one unheralded scientist: John Nicholson, a mathematical physicist working in the 1910s who postulated the existence of 'proto-elements' in outer space.
The climate crisis is making the Amazon drier, more brittle and more prone to fires, while also stripping away the unheralded dung beetles that help regenerate burned forests.
" It is rather unusual that a white man comes unheralded, " he said, as they walked together toward the field into which he had suggested that the traveler might turn his pony.