形容詞 challengeable:

1. capable of being challenged

1. The time was ripe for a challenge to the power of the government.
   時(shí)機(jī)已經(jīng)成熟，可以向政府權(quán)力提出挑戰(zhàn)了。
2. They had challenged and beaten the best team in the world.
   他們?cè)蚴澜缟献顝?qiáng)的球隊(duì)挑戰(zhàn)并將他們打敗。
3. This career offers a challenge.
   這份職業(yè)具有挑戰(zhàn)性。
4. Nowadays no one will challenge the fact that the earth is round.
   現(xiàn)在沒(méi)有人會(huì)對(duì)地球是圓的這一事實(shí)提出異議。