Penetrations
n. 渗透( penetration的复数形式 ); 穿透; <军>突破; （男人阴茎的）插入
🗣️ 情景例句
The longer the words the better.
单词越长越好。
The doctor said I looked anemic.
医生说我看起来贫血。
He showed that the average individual's sleep cycle is punctuated with peculiar bursts of eye-movements,
他指出，平常人的睡眠周期中不时伴有一阵阵奇怪的眼球队活动，