n.沉着自信，胸有成竹，有把握，确信不疑

He had a sureness about him that made people feel comfortable around him.
他身上有一种让人感到舒适的自信，周围的人都很自在。
The experienced chef moved with a sureness in the kitchen that impressed everyone watching.
这位经验丰富的厨师在厨房里动作自如，让所有观看的人都印象深刻。
She exuded a sense of sureness and confidence that was quite inspiring.
她散发出一种自信和确信感，非常鼓舞人心。
The professional golfer displayed a remarkable degree of sureness in his swing, leading to consistent success.
这位职业高尔夫球手在挥杆时表现出非凡的自信，从而取得了持续的成功。
His sureness of touch with the piano keys demonstrated his years of practice and dedication.
他对钢琴键的触感显示出他多年的练习和投入。
The seasoned detective approached the case with a sureness that suggested he knew exactly what he was doing.
这位有经验的侦探以一种自信的态度处理案件，表明他知道该怎么做。
Her sureness in her abilities allowed her to take on challenges she might otherwise have avoided.
她对自己的能力的自信让她勇于接受她可能会避免的挑战。
The confident businessman made decisions with a sureness that inspired trust from his clients.
这位自信的商人以一种能激励客户信任的自信做出决定。
The sureness in her voice when she spoke about her career goals was infectious.
当她谈论职业目标时，声音中的自信是极具感染力的。
The rock climber moved with an assuredness that belied the danger of their sport.
这位攀岩者以一种看似无所畏惧的自信移动，尽管他们的运动充满了危险。