It is doubtful whether/if they ever reached the summit before they died. 他們死前不太可能到過山頂。 It was dou...

doubtful中文::可疑的…，點擊查查權威綫上辭典詳細解釋doubtful的中文翻譯，doubtful的發音，音標，用法和例句等。 简体版 English Hind...

doubtful的意思、解釋及翻譯：1. If you are doubtful about something, you are uncertain about it: 2. If a sit...

海詞詞典,最權威的學習詞典,為您提供doubtful of的在線翻譯,doubtful of是什麼意思,doubtful of的真人發音,權威用法和精選例句等。 ...

It's doubtful that the shop is open. It's already 9pm. （這家店不大可能還在營業。已經晚上九點了。） It's doubtful wheth...

Doubtful definition is - lacking a definite opinion, conviction, or determination. How to use dou...