防疫: disease prevention, protection against epidemic...
祖母: father's mother, paternal grandmother...
领带: necktie...
预习: to prepare a lesson...
介意: to care about, to take offense, to mind...
歼灭: to wipe out, to crush, to annihilate...
坚强: staunch, strong...
马桶: chamber pot, wooden pan used as toilet, toilet bowl...
电梯: elevator, escalator...
脱离: to separate oneself from, to break away from, diastasis (medicine), abscission, abjunction (botany)...
