Boreholing
(borehole 的现在分词) n.地上凿洞
🗣️ 情景例句
Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动，例如召开纪念大会，植树造林，
Many a little (or pickle) makes a mickle.
积少成多。
One evening, however, the lamb was missing.
可是，一天晚上，那只小羔羊失踪了。