sow过去式和过去分词

　　例句：

　　The grain was sown in drill.

　　这种谷物是条播的。

　　Better germination is obtained if the seed is sown or drilled shortly after a shower.

　　在播种期如以硼盐肥料与种子混合使用，会抑制种子萌芽。

　　Instead, the session has sowed confusion.

　　相反，这次会议却引发了混乱。

　　He cleverly sowed doubts into the minds of his rivals

　　他巧妙地令对手心生疑窦。