US Defense Chief Urges Closer Ties with Brazil in Space Research https://learningenglish.voanews.com/a/4528380.html
hemisphere
n. half of the Earth
orientation
n. a main interest, quality, or goal
velocity
n. quickness of motion
missions
n. a task that is considered to be a very important duty
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Turkey's Erdogan Threatens Boycott of US Goods https://learningenglish.voanews.com/a/4528163.html
currency
n. the kind of money a country uses
tariffs
n. a tax on goods coming into or leaving a country
sanctioned
adj. an action that is taken or an order that is given to force a country to obey international laws by limiting or stopping trade with that country
pastor
n. a minister or priest in charge of a church or parish
divert
v. to move in a different direction
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http://www.bbc.co.uk/learningenglish/english/course/english-you-need/unit-19/session-3
