Barebacking
n. 不戴套做爱；不戴套性交
🗣️ 情景例句
Shows insufficient evidence of achievement.
缺乏获得成功的足够依据。
She is timid and completely at a loss what to do.
她羞臊得不知所措。
Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
此后不久，英国著名的“挑战者”号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题。