If tryptophan is scarce,the ribosome pauses when attempting to translate the two trp codons in the leader sequence,which leaves the leader sequence available to form the anti-terminator stem-loop.是什么意思_If tryptophan is scarce,the ribosome pauses when attempting to translate the two trp codons in the leader sequence,which leaves the leader sequence available to form the anti-terminator stem-loop.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句