[00:00.00]hazardous adj.有危险的；冒险的；碰运气的
[00:03.00]The journey to the palace was hazardous. 去往宫殿的旅程是危险的。
[00:07.00]heighten v.提高；加强；升高；变强
[00:09.00]If you want to succeed, you must heighten your confidence. 如果你想成功，你必须更加自信。
[00:14.00]hoist v.升起；吊起 n.起重机，升起，吊起
[00:16.00]Do you believe that an adult elephant can hoist the weight of a ton? 你相信一头成年象能提起一吨的重量吗？
[00:22.00]hospitality n.好客；殷勤
[00:24.00]People tend to refer to hospitality industry as "window" industry just as they call tourism "smokeless" industry. 人们倾向于把服务业比作“窗口”产业，就像他们称旅游业为“无烟”行业一样。
[00:35.00]humane adj.仁慈的，人道的，高尚的
[00:37.00]She works for humane treatment of prisoners. 她工作于人道对待囚犯的团体。
[00:42.00]hurl v.猛投；猛掷，愤慨的说出 n.用力的投掷
[00:44.00]He hurled curses at the man who had hurled a stone at his window. 他对向他的窗户扔石头的男人抛出狠话。
[00:50.00]hypothesis n.假设
[00:52.00]The researcher made three hypotheses before his experiment, but only proved one. 研究者在实验之前做了三个假设，但只证实了一个。
[01:00.00]ignite v.点火；燃烧
[01:02.00]He approached the explosive to ignite it. 他走近炸药点燃它。
[01:06.00]illiterate adj.文盲的 n.文盲
[01:08.00]About half the population in the country is still illiterate. 这个国家超过一半的人口还是文盲。