tā / men / zhī / jiān / de / yí / jì / chí / xù / le / hěn / jiǔ / shuí / yě / bù / yuàn / xiān / kāi / kǒu

他们之间的疑忌持续了很久，谁也不愿先开口。

The suspicion between them lasted a long time, and neither wanted to speak first.