direct vision的用法和样例：
例句
- Skilled sports people hiding their intended passes or moves by using their peripheral vision rather than looking directly.
熟练的体育运动员通过边视觉而不是直视来隐藏自己的欲进行的传球或动作。 - The keys of treatment are to incise the left and right bile duct and remove stone under direct vision and dilate the bile duct stricture.
左右肝管切开，直视下取石及狭窄扩张是尾状叶胆管结石治疗的关键。
