labratory - a room set up for scientific research, wafted - moved gently though the air, soluble - it dissolves in water, propellant - a gas under pressure in a can that helps to spray contents of the can, atmosphere - a group of gasses that surround a planet, testifies - promises what they say is true,

Module 4 Week 3

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嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?