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3-62 ภาษาอ ังกฤษสำ�หรับเจ้าห น้าที่ส ำ�นักงาน
5.
a decrease of, a fall of, a drop of
Example There was a fall of off ice
equipment sales in 1987.
700 to reach a peak (of)
600 Example At the end of 1988 the sales of off ice equipment
500 reached a peak of 500 units.
400
300
200
100
1986 1987 1988 1989
6.
600 suddenly, sharply, abruptly
500 Example In 1988 the computer imports increased suddenly.
400 (sharply/abruptly).
300
200
100
1986 1987 1988 1989
7.
600
500 slowly, gradually, slightly
400 Example In 1987 the computer imports went up slowly.
300 (gradually/slightly).
200
100
1986 1987 1988 1989
