tā / suī / rán / zhī / dào / zhēn / xiàng / què / yīn / shēn / qīng / yán / wēi / bù / gǎn / dāng / zhòng / fǎn / bó / shàng / si

他虽然知道真相，却因身轻言微，不敢当众反驳上司。

Although he knew the truth, he did not dare contradict his superior in public because his words carried little weight.