smooth (a)
 /smuːð/

trôi chảy, suôn sẻ

causing no difficulty, problems, or delays

wholesaler (n)
/ˈhoʊlˌseɪ·lər/

người bán sỉ

someone whose job is to sell large quantities of goods to shops or small businesses

prerequisite (n)
 /ˌpriːˈrek.wɪ.zɪt/

điều kiện tiên quyết

something that is required or necessary as a prior condition

deposit (n)
/dɪˈpɒz.ɪt/

tiền đặc cọc

an amount of money that you pay as the first part of the total payment for something

source (n)
/sɔːs/

nguồn

a person, place, or thing that provides something that you need or want

function (v)
/ˈfʌŋk.ʃən/

hoạt động

to perform tasks

stationery (n)
/ˈsteɪ.ʃə.ner.i/ 

văn phòng phẩm

the things needed for writing, such as paper, pens, pencils, and envelopes

increase (v)
/ɪnˈkris/

gia tăng, tăng lên

to (make something) become larger in amount or size

obtain (v)
 /əbˈteɪn/

thu được, đạt được

to get something that you want or need, especially by going through a process that is difficult

extra cost (n)
/ˈek.strə kɒst/

chi phí phụ trội, chi phí thêm

the additional amount of money needed to buy, do, or make something

essential (a)
 /ɪˈsɛnʃl/

thiết yếu

extremely important or necessary

quality (n)
/ˈkwɑː.lə.t̬i/

chất lượng

how good or bad something is

everyday (a)
/ˈev.ri.deɪ/

thông thường, hằng ngày

routine, common, ordinary

various service package (phrase)
/ˈver.i.əs ˈsɜː.vɪs ˈpæk.ɪdʒ/

nhiều gói dịch vụ

related group of dealing with a customer in a shop, restaurant, or hotel by taking their order, showing or selling them goods

monthly payment (phrase)
/ˈmʌnθ·li ˈpeɪ·mənt/

tiền trả góp

the amount paid each month towards the principal and interest amount of a loan

maintain (v)
 /meɪnˈteɪn/

duy trì

to continue to have; to keep in existence

mail order (n)
/meɪl ˈɔːr.dɚ/

đặt hàng qua thư

a way of buying goods in which you order them by post, telephone, or the Internet and they are posted to you

diversify (v)
/daɪˈvɜː.sɪ.faɪ/ 

đa dạng hóa

to broaden, to make more varied

free delivery (phrase)
/friː dɪˈlɪv.ər.i/

giao (hàng) miễn phí

there is no cost for transporting the goods to the buyer

enterprise (n)
/ˈen.t̬ɚ.praɪz/

công ty

a business company or organization