22강 필수단어

temporary 일시적인 downtime 작동하지 않는 시간 get A to do A가~하게 하다 contract 계약 계약서 negotiation 협상 necessary 필요한 durability 내구성 material 재료, 자료 replace A with B A를 B로 교체하다 efficient 효과적인

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1.Because of the system upgrade, there may be temporary downtime.

2.We got the client to sign the contract after a long negotiation.

3.It is necessary to test the durability of new materials.

4.The trainer will teach the new employees to use the company’s software.'

5.We need to replace the existing software with a more efficient one.