1. Now it was positively dangerous.
    现在是十分危险了。

2. He always volunteered for the most dangerous missions.
    他总是主动要求执行最危险的任务。

3. Abrupt dismissaled, were a potentially dangerous element.
    突然解雇成了潜在的危险因素。

4. Aeroplanes have the reputation of being dangerous and even hardened travellers are intimidated by them.
    飞机以危险而著称，连老资格的旅行者也怕飞机。

5. As foot specialists will tell you, shoes can be dangerous to your feet.
    足科专家会对你讲：鞋子会危害你的脚。

6. Although medical science had achieved control over several dangerous diseases, some are returning.
    虽然医学早已能够控制若干危险的疾病，有些病却正在卷土重来。

7. Your perfidious gossip is malicious and dangerous.
    你说的那些背信弃义的话是很刻毒险恶的。

8. Your perfidious gossip is malicious and dangerous.
    你说的那些背信弃义的话是很刻毒险恶的。

9. Stupid and dangerous as it seems looking back, I went into my marriage at the age of 25 without being in love.
    现在回忆起来似乎是有些愚蠢、危险，但我当时真的是在25岁时，未经恋爱就结婚了。

10. Making their way through the jungle, the explorers could hear each night the cries of jaguars, the most dangerous and feared of the jungle predators.
    探险家们在丛林里摸索着前进，每到夜里总能听到美洲虎的吼叫，这种老虎是丛林中最凶恶、最叫人惧怕的吃人野兽。