VOA慢速英语:英国领导的研究小组从印度洋进行历史性的广播

transmission – n. to send video or audio to another place

submersible – adj. an object covered with water, such as a submarine

optical – adj. involving the use of devices that get information for a computer by identifying patterns of light

spectrum – n. the group of colors that a ray of light can be separated into, such as the colors red, orange, yellow, green, blue, indigo, and violet

livestreamed – v. to play in real time over the internet

fiber-optic – adj. the use of thin threads of glass or plastic to carry large amounts of information in the form of light signals