在雅思口語Part 3中“有用的發(fā)明”話題中有提問到“Are there any other inventions that have made the world better?”。這個題目，或許大多數同學第一時間想到的就是手機、電腦、互聯網，畢竟這幾樣與大家的日常聯系緊密。但除了這幾種發(fā)明，還有一些其他意義非凡的發(fā)明，同時也有不少不錯的表達可以利用起來。

1）High-speed trains（拓展解釋：結合高鐵帶來的便捷性與經濟效益。）

相關表達：
high-speed train 高鐵
connect remote villages/towns with major cities in China 將偏遠的農村/城鎮(zhèn)與中國的其他主要城市連接
turn a landlocked town into a land-linked, frequently-visited destination 將一個交通閉塞的小鎮(zhèn)變成一個四通八達、受歡迎的旅游地
job/employment opportunities related to the railway 與鐵路相關的就業(yè)機會
sanitary worker 清潔工
security inspector 安檢員
agritainment restaurant 農家樂餐館
shorten the travel time between cities 縮短成時間的旅程時間
migrant worker 外來務工者
visit friends and family in another city 探訪在另一個城市的朋友和家人
extensive high-speed railway network 覆蓋廣泛的高鐵網絡
make outlying areas/regions accessible 使得邊遠地區(qū)易于到達
generate an extra source of income 帶來額外的收入來源
boost tourism 促進旅游業(yè)
go on a weekend retreat 周末度假
immerse oneself in idyllic settings 沉浸在田園般的環(huán)境中

2）CT scan, ultrasound scanning（拓展解釋：結合疾病與健康。）

相關表達：
ultrasound scanning 超聲影像
health checkup 體檢
have regular checkups 定期體檢
benefit countless patients 使無數病人受益
a lump in one’s breast/lung/neck 某人胸/肺/頸部的一個腫塊
intervene timely/early 及時/盡早干預
adjust one’s lifestyle 調整自己的生活方式
get rid of poor habits 改掉不良習慣
undergo surgery 做手術
take pills 服藥
prevent the illness from worsening 防止病情惡化
improves the chances of successful treatment 增加成功治愈的機會
severe symptom 嚴重的癥狀
prenatal care 產前保健
reduce the risk of having a low-birth-weight baby 降低低出生體重嬰兒的風險
detect and treat potential health problems early on 盡早檢測出病治療潛在的健康問題
gene defect 基因缺陷
gene mutation 基因變異
there’s a physical deformity in the baby 嬰兒存在畸形
detect genetic abnormalities in the foetus 檢測胎兒的基因異常

3 )無人機技術（拓展解釋：結合農業(yè)技術、救災救援、生態(tài)環(huán)境保護。）

相關表達：
drone technology 無人機技術
monitor crop health 檢測作物健康狀況
detect potential problems 探測潛在問題
nutrient deficiencies 營養(yǎng)不足
take aerial images of crops 拍攝農作物航拍圖
surveillance drone 偵察機
in the aftermath of hurricanes and earthquakes 在颶風和地震發(fā)生之后
assess damage from.. 評估…造成的損失
locate victims 定位受災者
deliver medical supplies, food, and other essentials運送醫(yī)療用品、食物和其他必需品
roads and other infrastructure are damaged or inaccessible道路和其他基礎設施受損或無法通行
capture clear, detailed images and videos of wildlife拍攝清晰、詳細的野生動物圖像和視頻
minimise human intervention 減少人類干預
conduct research without disturbing natural habitats 在不干擾自然棲息地的情況下開展研究
track animal movements 追蹤動物行蹤
monitor population trends 監(jiān)控數量情況
identify potential threats to their survival 識別他們生存的潛在威脅
combat poachers 打擊偷獵者
deploy drones to patrol conservation zones 在保護區(qū)部署無人機巡邏
detect and track poachers in real-time 實時檢測追蹤偷獵者

以上切入點和相關表達也可以靈活應用到Part3的其他問題，比如:

Is it necessary to have regular checkups?

What are the ways to protect wildlife species?

How has technology impacted agriculture?

Why do more and more people enjoy visiting other cities?