perceptible

1. ADJ Something that is perceptible can barely be seen or noticed. 勉强看得见的; 勉强察觉的

Pasternak gave him a barely perceptible smile. 帕斯特纳克给了他一个几乎无法察觉的微笑。

2. perceptiblyADV [ADV with v]

The tension was mounting perceptibly. 紧张状况明显在加剧。