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a sudden or disastrous event that destroys or changes a whole region or system
thảm họa, cuộc khủng hoảng
a person, thing, or event that provokes or accelerates change or activity by introducing new perspectives or actions
chất xúc tác, nhân tố thay đổi
a large weapon that was used in ancient times to throw stones or other objects with great force
máy phóng
a large waterfall where water rushes forcefully over a height
thác nước, khe nước lớn
the degree of roundness exhibited by a three-dimensional object
hình cầu
(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points
hình cầu, hình elip
a measuring tool used to determine the roundness of a curved surface
spherometer
someone who moves from one country to another with the intention of settling there permanently
di cư, người di cư
to leave one's own country in order to live in a foreign country
di cư
to disturb or unsettle someone, causing them to feel worried or uneasy
khiến rối, làm lo lắng
a disruption or disturbance of a normal state of mind or emotions
sự xáo trộn, sự lo lắng
to temporarily stitch two pieces of fabric together with long, loose stitches that can later be easily removed
khâu tạm, khâu nhép
a fortified structure extending from a wall, typically angled, for defensive purposes
bastion
someone who spends or uses resources recklessly or wastefully
người phung phí, kẻ lãng phí
a remarkable example of a particular quality, skill, or achievement
tài năng, kỳ diệu
an individual, often a leader or authority figure, who possesses the power to create laws, particularly not directly elected by the people
nhà lập pháp, người ban hành luật
someone who can write or approve a law as a member of a legislative body, usually elected by people
nhà lập pháp, đại biểu
