英文關鍵字
amazing
archimedes
balloons
bath
bathtub
blue
colours
density
filled
greater
inserting
knowledge
physics
put
science
several
sink
study
submerged
take
technology
theory
try
volume
water
weight
英文關鍵字
amazing
archimedes
balloons
bath
bathtub
blue
colours
density
filled
greater
inserting
knowledge
physics
put
science
several
sink
study
submerged
take
technology
theory
try
volume
water
weight