extension造句
After a further four-month
extension of her probation period, she was sacked.
在又试用了4个月后，她被开除了。
For further information, please contact 414 3925,
extension 2253.
详情请致电4143925,转分机2253。
We used so many lights that we needed four
extension cords.
我们用的灯很多，因此需要4个接线板。