公共英语四级写作必备短语及例句（4）
door-to-door selling
a method of presenting and selling products or services in which a salesperson goes to the residences or homes of potential buyers, knocking on their doors to solicit business
EXAMPLE:
"Many homeowners dislike door-to-door selling and consider it to be disturbing to their privacy."
feasibility test
(noun)
a procedure or basis for evaluation or assessment to see if something is capable of being accomplished or brought about, or is possible
EXAMPLE:
"A business will often do a feasibility test on a product before spending money to market it to consumers."
feel the pinch
a financially difficult, tight, strained, or squeezed circumstance or situation
EXAMPLE:
"Experiencing little demand for its products, the company began to feel the pinch."
file thirteen
any container to discard or throw away unwanted paperwork; in an office setting a container for rubbish; the wastebasket
EXAMPLE:
"The salesperson crumpled the cancelled order and tossed it into file thirteen."
fat cat
a wealthy and privileged person
EXAMPLE:
"More than one fat cat has been seen visiting the offices of political candidates."
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