Mauna Loa volcano sets off warning signals in Hawaii
夏威夷的莫纳罗亚火山发出警告信号
Hawaii officials are warning residents of the Big Island that Mauna Loa, the world’s largest active volcano, is in a state of heightened unrest and sending signals that it might erupt.
夏威夷官员警告大岛居民，世界上最大的活火山莫纳罗亚火山(Mauna Loa)正处于高度动荡状态，并发出可能爆发的信号。
The volcano, which covers half the island of Hawaii, is under an elevated advisory alert, but officials warn this does not mean an eruption is imminent. There are still some precursory signals that have preceded previous eruptions that are missing.
这座火山覆盖了半个夏威夷岛，目前处于高度警戒状态，但官员们警告说，这并不意味着火山即将喷发。仍然有一些在火山爆发前就已经存在的前兆信号，但现在还没有找到。
heighten v. /ˈhaɪtən/
If something heightens a feeling or if the feeling heightens, the feeling increases in degree or intensity. 加剧
• The move has heightened tension in the state.
这一举动加剧了该州的紧张局势。
unrest n. /ʌnˈrest/
a political situation in which people are angry and likely to protest or fight 动荡；动乱；骚动
There is growing unrest in the south of the country. 这个国家的南方日益动荡不安。
elevate v. /ˈelɪveɪt/
to give sb/sth a higher position or rank, often more important than they deserve 提拔，晋升，提升（到不应有的位置）
He elevated many of his friends to powerful positions within the government. 他将许多朋友都提拔到政府部门的要职上。
advisory n. /ədˈvaɪzərɪ/
An advisory is an official announcement or report that warns people about bad weather, diseases, or other dangers or problems. 警告
• 26 states have issued health advisories.
26个州已经发布了卫生警告。
imminent adj. /ˈɪmɪnənt/
If you say that something is imminent, especially something unpleasant, you mean it is almost certain to happen very soon. (尤指不好的事情) 即将发生的
• the imminent threat of invasion 迫在眉睫的入侵威胁
precursory adj. /prɪˈkɜːsərɪ/
Preceding something in time, development or position 前兆的，先兆的
precede vt. /prɪˈsiːd/
If one event or period of time precedes another, it happens before it. (某事件) 先于 (另一事件) 而发生
Intensive negotiations between the main parties preceded the vote. 投票之前，主要政党间进行了深入细致的磋商。
His resignation was preceded by weeks of speculation. 在他辞职之前，有关的猜测已持续了几个星期。
She preceded me in the job. 她是我这工作的前任。
