You don't have to worry, we're definitely talking about trace, trace amounts.

但你不必担心，我们所说的绝对是非常，非常微量的。

youdao

In normal coal samples, quartz and other minerals are found only in trace amounts.

在一般的煤的样板中，石英和其他矿物质的含量是相当低的。

youdao

They occur in such trace amounts in natural, or "whole," coal that they aren't a problem.

它们在天然煤(或称“全”煤)中仅以痕量存在，并不构成问题。

youdao

Over the past few decades,however, scientists have determined that even trace amounts of lead in children's bodies leads to long-term neurological and behavioral problems.

VOA: standard.2009.12.19

I don't know how many know that there are trace, trace amounts, of cyanide in almonds.

我不知道有多少人知道在杏仁中有非常，非常微量的氰化物。

麻省理工公开课 - 化学原理课程节选

You don't have to worry, we're definitely talking about trace, trace amounts.

但你不必担心，我们所说的绝对是非常，非常微量的。

麻省理工公开课 - 化学原理课程节选

Fifty thousand years ago, a meteor carrying trace amounts of silicone carbide crashed into present-day Arizona.

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However, carbon-14 is only found in trace amounts, which can make it difficult to detect.

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The only drug not in veterinary records was this fourth drug present in only trace amounts.

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