在雅思口语Part 3中“有用的发明”话题中有提问到“Are there any other inventions that have made the world better?”。这个题目，或许大多数同学第一时间想到的就是手机、电脑、互联网，毕竟这几样与大家的日常联系紧密。但除了这几种发明，还有一些其他意义非凡的发明，同时也有不少不错的表达可以利用起来。

1）High-speed trains（拓展解释：结合高铁带来的便捷性与经济效益。）

相关表达：
high-speed train 高铁
connect remote villages/towns with major cities in China 将偏远的农村/城镇与中国的其他主要城市连接
turn a landlocked town into a land-linked, frequently-visited destination 将一个交通闭塞的小镇变成一个四通八达、受欢迎的旅游地
job/employment opportunities related to the railway 与铁路相关的就业机会
sanitary worker 清洁工
security inspector 安检员
agritainment restaurant 农家乐餐馆
shorten the travel time between cities 缩短成时间的旅程时间
migrant worker 外来务工者
visit friends and family in another city 探访在另一个城市的朋友和家人
extensive high-speed railway network 覆盖广泛的高铁网络
make outlying areas/regions accessible 使得边远地区易于到达
generate an extra source of income 带来额外的收入来源
boost tourism 促进旅游业
go on a weekend retreat 周末度假
immerse oneself in idyllic settings 沉浸在田园般的环境中

2）CT scan, ultrasound scanning（拓展解释：结合疾病与健康。）

相关表达：
ultrasound scanning 超声影像
health checkup 体检
have regular checkups 定期体检
benefit countless patients 使无数病人受益
a lump in one’s breast/lung/neck 某人胸/肺/颈部的一个肿块
intervene timely/early 及时/尽早干预
adjust one’s lifestyle 调整自己的生活方式
get rid of poor habits 改掉不良习惯
undergo surgery 做手术
take pills 服药
prevent the illness from worsening 防止病情恶化
improves the chances of successful treatment 增加成功治愈的机会
severe symptom 严重的症状
prenatal care 产前保健
reduce the risk of having a low-birth-weight baby 降低低出生体重婴儿的风险
detect and treat potential health problems early on 尽早检测出病治疗潜在的健康问题
gene defect 基因缺陷
gene mutation 基因变异
there’s a physical deformity in the baby 婴儿存在畸形
detect genetic abnormalities in the foetus 检测胎儿的基因异常

3 )无人机技术（拓展解释：结合农业技术、救灾救援、生态环境保护。）

相关表达：
drone technology 无人机技术
monitor crop health 检测作物健康状况
detect potential problems 探测潜在问题
nutrient deficiencies 营养不足
take aerial images of crops 拍摄农作物航拍图
surveillance drone 侦察机
in the aftermath of hurricanes and earthquakes 在飓风和地震发生之后
assess damage from.. 评估…造成的损失
locate victims 定位受灾者
deliver medical supplies, food, and other essentials运送医疗用品、食物和其他必需品
roads and other infrastructure are damaged or inaccessible道路和其他基础设施受损或无法通行
capture clear, detailed images and videos of wildlife拍摄清晰、详细的野生动物图像和视频
minimise human intervention 减少人类干预
conduct research without disturbing natural habitats 在不干扰自然栖息地的情况下开展研究
track animal movements 追踪动物行踪
monitor population trends 监控数量情况
identify potential threats to their survival 识别他们生存的潜在威胁
combat poachers 打击偷猎者
deploy drones to patrol conservation zones 在保护区部署无人机巡逻
detect and track poachers in real-time 实时检测追踪偷猎者

以上切入点和相关表达也可以灵活应用到Part3的其他问题，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?