單字卡學習系統
| 類別 Spelling
錄音中...
The butterfly's wings have perfect symmetry.
錄音中...
The artist loved the symmetry of the ancient building.
錄音中...
People once believed in a geocentric universe.
錄音中...
The geocentric model placed Earth at the center of everything.
錄音中...
Please put these events in chronological order.
錄音中...
The biography tells the chronological story of her life.
錄音中...
The odometer in the car shows we have driven 50,000 kilometers.
錄音中...
He checked the odometer to see how far we had traveled.
錄音中...
He suffers from chronic back pain.
錄音中...
Air pollution is a chronic problem in the city.
錄音中...
The streetlight turns on automatically at night because of a photocell.
錄音中...
A photocell can convert light into electricity.
錄音中...
We must protect the biosphere we live in.
錄音中...
All living things on Earth are part of the biosphere.
錄音中...
Always check your speedometer when you drive.
錄音中...
The speedometer showed that the car was going 80 km/h.
錄音中...
She studies geology because she is interested in rocks and volcanoes.
錄音中...
The geology of this region is very complex.
錄音中...
A photon is a tiny particle of light.
錄音中...
Scientists can measure the energy of a single photon.