I cut down a big tree, and then began to make a long hole in it.

我砍倒了一棵大树，然后开始掏成一个长条形洞。

youdao

This paper describes the effects of bottom water cushion on long hole blasting.

本文论述了水垫层在深孔爆破中的作用。

youdao

High pressure ring-shaped DTH drills are key equipment for underground high level large diameter long hole mining.

高气压环形潜孔钻机是地下矿山高阶段大直径深孔采矿的关键设备。

youdao

A huge hole was torn in the front of it a long time ago.

VOA: special.2010.05.12

Today's deal introduces a lot of certainty to US income tax rates but it leaves nearly all the key spending issues up in the air - and it does not pave the way for the rise in tax revenues, relative to GDP, which most economists think will be crucial to filling the long-term hole in America's federal budget.

BBC: Cliffhanger: Still hanging

Echoing statements heard not long ago at Jackson Hole, Bernanke tried to disprove what he sees as misunderstandings as to how asset purchases work.

FORBES: Bernanke: 'I Don't Think Our Tools Are That Strong'

So it's going to take quite a long time to fill that hole.

WHITEHOUSE: Press Briefing