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課文單字聽寫練習 Spelling

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總單字數: 10 個 剩餘: 10 個單字
1.
單字: efficiency
中文: 效率
Efficiency is the quality of doing a task successfully without wasting time or energy.
This new machine works with great efficiency.
2.
單字: engineering
中文: 工程
Engineering is the application of science and math to solve problems.
Many students study engineering to learn how to build bridges and machines.
3.
單字: fossil fuel
中文: 化石燃料
A fossil fuel is an energy source formed in the Earth's crust from decayed organic material over millions of years.
Coal and natural gas are both fossil fuels.
4.
單字: gear
中文: 齒輪；裝備
A gear can be a device of connecting sets of wheels with teeth, or a set of equipment for a sport or event.
The bicycle's gear helps you ride uphill more easily.
5.
單字: halve
中文: 將……分成兩等份
To halve something means to divide it into two equal parts.
Please halve the apple so we can share it.
6.
單字: panel
中文: 面板；嵌板
A panel is a flat rectangular piece of wood or metal that forms the surface of a wall or door.
He nailed a wooden panel onto the wall.
7.
單字: petroleum
中文: 石油
Petroleum is commonly called crude oil or just oil.
Many countries import petroleum to make gasoline.
8.
單字: photons
中文: 光子
Photons are tiny bundles of matter that transmit light.
Solar panels absorb photons from the sun.
9.
單字: renewable
中文: 可再生的
A renewable resource can be replaced naturally and never runs out.
Solar energy is renewable because it will never run out.
10.
單字: sleek
中文: 光滑流線的
Something that is sleek is smooth, glossy, and streamlined.
The sleek design of the car helps it move faster.