zhè / xiàng / gōng / zuò / suī / rán / hěn / yǒu / tiǎo / zhàn / dàn / wǒ / men / bù / néng / yí / yù / dào / wèn / tí / jiù / zhī / nán / ér / tuì

这项工作虽然很有挑战，但我们不能一遇到问题就知难而退。

Although this work is challenging, we cannot back out as soon as we encounter a problem.