sequester的现在完成时怎么拼写？

CO 2 - emitting industries could pay farmers to buy stoves to char and sequester farm waste.排放二氧化碳的工业会向农民支付一定费用,由农民买烧炉炼木炭、收集农场废物....

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sequester的一般过去时为：sequestered...

sequester的现在进行时为：sequestering...

sequester的第三人称单数（三单）为：sequesters...

sequester的音标：sequester的英式发音音标为：[sɪ'kwestə(r)]sequester的美式发音音标为：[sɪ'kwɛstɚ]...