so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。
新概念英语第四册 Lesson 13 The search for oil

📚 句中词汇解析

从本句中提取的重要词汇

sample ['sæmpl] 词频2 词根: s
n. 样品，华样;标本，榜样;（化验的）取样;[信]信号瞬时值; vt. 取…的样品，尤指用样品来检验;品尝;抽样调查; adj. 作为代表或范例的;
💡 s分开+ample拿，获得→分开拿出→标本,样品
"We ask for a sale by sample agreement."
我们要求签署凭样品交易的合约。
近义：probe, taste, test, try, essay, pattern
often ['ɔf(tə)n] 词频1
adv. 常常;经常;时常;再三;
💡 十(ten)有八九的(of)， 经常的
"Sleep has often been thought of as being in some way analogous to death."
人们常常认为睡眠在某种意义上来说类似死亡。
近义：manyfold, oft, oftentimes, repeatedly, usually, offtimes 反义：infrequently, occasionally, seldom, sometimes
obtained
v. 获得（obtain的过去分词）
coring
[机] 结晶偏析

📚 更多「新概念英语第四册」例句

because this is easier to shape than other kinds.
因为燧石较之其他石头更容易成形。
in order that an individual or a group of individuals may earn as much money as possible.
为的是让某个个人或某一部分人尽可能多地赚钱。
Although mankind has undergone no general improvement in intelligence or morality, it has made extraordinary progress in the accumulation of knowledge.
虽然人类有智力和道德上没有得到普遍提高，但在知识积累方面却取得了巨大的进步。
our confidence in the curative properties of the bottle of medicine remains the same as theirs.
我们对瓶装药品疗效的信心仍与祖辈一样坚定。
Where the cost of government is high, resources for development are correspondingly low.
凡是政府管理费用高的地方，用于发展国家经济的资金就会相应地减少。
can be his undoing: he has begun to write to please.
会导致作家的毁灭，因为他已经开始为取悦他人而写作了。