efficiency
gb/ɪfˈɪʃənsi/ us/ɪfˈɪʃənsi/
B1
Anh
~ 2400
Các nghĩa
0 nghĩa
Danh từ
B1
property
1
ability to work well without waste
The ability to do something well without wasting time, energy, or materials.
Mẫu sử dụng:
[someone/something]'s efficiency in [doing something]
Lỗi thường gặp:
Learners sometimes confuse 'efficiency' with 'effectiveness'. Efficiency is about doing things with less waste; effectiveness is about achieving the goal, regardless of waste.
Từ đồng nghĩa
effectiveness (Focuses more on producing the desired result, not necessarily with minimal waste.)
|
productivity (Emphasizes the amount of output produced relative to input.)
Từ trái nghĩa
inefficiency (Describes poor use of resources, leading to waste or low output.)
Cụm từ đi kèm
improve efficiency
|increase efficiency
|energy efficiency
|operational efficiency
|efficiency gains
Chủ đề
business
|productivity
|technology
|work
|core_vocabulary
Ví dụ
- The new software greatly improved the team's efficiency.
- Energy efficiency is a key factor in reducing costs.
- Regular training can boost employee efficiency.
- The manager praised the efficiency of the assembly line.
- We need to focus on efficiency if we want to meet our deadlines.
Ví dụ cho người học
- The new machine works with high efficiency.
- Better planning will help our efficiency.
- We want to improve the efficiency of the team.
- The car has good fuel efficiency.
Danh từ
technical
B2
quantity
2
output-to-input ratio in systems
A number that shows how much useful work comes from the energy or effort put in.
Mẫu sử dụng:
the efficiency of [a system/machine]
Lỗi thường gặp:
Learners may confuse the general meaning of 'efficiency' with this technical, measurable ratio. In science and engineering, it has a precise definition.
Từ đồng nghĩa
performance ratio (More specific technical term used in engineering contexts.)
Từ trái nghĩa
loss (Indicates wasted energy or resources in a system.)
Cụm từ đi kèm
mechanical efficiency
|thermal efficiency
|conversion efficiency
Chủ đề
science
|engineering
|technology
|education
Ví dụ
- The engine's efficiency drops at higher speeds.
- Solar panel efficiency has improved over the last decade.
- We measured the pump's efficiency under different loads.
Ví dụ cho người học
- The car engine has low efficiency.
- This motor has 90% efficiency.
- We test the efficiency of the machine.
Ngữ pháp
Dạng từ điển
efficiency
IPA
GB/ɪfˈɪʃənsi/
US/ɪfˈɪʃənsi/
Âm tiết và trọng âm
ef - fi - ciency (3 âm tiết)
Stress on 2nd syllable (fi)
Các dạng từ
Noun
- Base: efficiency
- Plural: efficiencies, efficiency
Họ từ
Forms
efficiencies
noun
Core family
efficient
adjective B1
efficiently
adverb B2
Negative and opposite forms
Cách diễn đạt
energy efficiency
1/ˈɛnɚd͡ʒi ɪfˈɪʃənsi/
fixed phrase
using less energy for same work
Using less energy to do the same job.
Ví dụ
- Improving energy efficiency can lower your electricity bills.
- Modern appliances are designed for better energy efficiency.
fuel efficiency
1/fjˈul ɪfˈɪʃənsi/
fixed phrase
distance traveled per fuel amount
How far a vehicle can go using a certain amount of fuel.
Ví dụ
- Hybrid cars usually have better fuel efficiency.
- We compared the fuel efficiency of several models.
operational efficiency
1/ˌɑpɚˈeɪʃənəl ɪfˈɪʃənsi/
fixed phrase
formal
smooth and cost-effective operations
How well a company works without wasting money or time.
Ví dụ
- They restructured to improve operational efficiency.
- Operational efficiency is critical for staying competitive.