Studies on the difference of bolting and unbolting onions on the physiological and biochemical characteristics .

洋葱抽薹与未抽薹植株生理生化特性对比研究。

The wise old lady worked as a gatekeeper unbolting the gate for carriages and horses of a ranch .

这位睿智的老太太是个看门的，她负责给一个大农场的马和马车开门。