ODF 3_U9_RTL

the process of making something contain more acid (sự axit hóa)

very strange or unusual (kì quặc)

huge ; extremely large (khổng lồ, to lớn)

a person/thing causing danger (mối đe dọa)

a wide and open area of something, especially land or water (dải, dải rộng)

to make something go under the surface of water (dìm, nhấn chìm)

to spread over an area of land (trải ra, mở rộng ra)

a feeling of being frightened (nỗi sợ)

an area beyond where people live, that is wild and unknown (ranh giới)

or

border; a line that separates two countries (biên giới)

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