1. It closed three plants during the process. 这三家工厂关闭的过程中。
2. The breathing should be long and deep. The mouth should be closed and inhale and exhale only through the nose. 呼吸应当尽可能的长而且深。呼吸时应该闭上嘴巴。吸气和呼气都只要通过鼻子来完成。
3. As upstream pressure decreases under the diaphragm, the spring pushes the stem/seat towards the closed position restricting flow through the pilot. 当隔膜下的上游压力降低时，弹簧就将阀杆/阀座反推向关闭位置，限制流体通过引导装置。
英英解释
adj.
1. not open or affording passage or access
2. (set theory) of an interval that contains both its endpoints
3. not open
4. used especially of mouth or eyes
5. requiring union membership
6. with shutters closed
7. not open to the general public
8. not having an open mind
9. blocked against entry
