各位大侠。这句话是个什么从句啊，多谢啦

soonhow · 发表于 2015-8-2 02:31:11

rats ate meals that change tryptophan level in the blood.

soonhow · 发表于 2015-8-2 02:35:42

原句是：

Our first studies sought to determine whether the increase in serotonin observed in rats given a large injection of the amino acid tryptophan might also occur after rats ate meals that change tryptophan level in the blood.

这个first studies怎么讲呢？为什么用复数？

soonhow · 发表于 2015-8-3 01:39:09

没人回啊

[SC资料] 各位大侠。这句话是个什么从句啊，多谢啦

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