produce electricity by doing sth 通过做某事发电
no use by doing sth 做…也没用
begin by doing sth 从做某事开始
be shocked by doing sth 被某事打击
Live by doing sth 靠做……为生
mean by doing sth 干某事有
tickle by doing sth 以做某事满足
respond by doing sth 通过做……作出回答
help sb by doing sth 通过做某事来帮助某人
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