1. 只需等他丢下皮肤 离开房间 悄悄潜进去 偷一小块出来：We need to geta pie... | Sure,we'll just waituntil he leaves his room without his skin,sneak in,and take a piece.|只需等他丢下皮肤 离开房间 悄悄潜进去 偷一小块出来 | I want you to get a skin samplefor ...

2. 潜入、偷偷进入：19. Noboday knows when he sneaked in. 谁都不知道他什么时候溜进来的. | sneak in 潜入、偷偷进入 | 20. We stop here for this topic and move to the next one. 有关这个话题我们就此打住,谈下一个话题.

3. 偷偷进入：side-effect n.副作用 | sneak in 偷偷进入 | soaring adj.急剧上升的

4. 淡入,渐显：67.smoothness index 平滑指数 | 68.sneak in 淡入,渐显 | 69.snoring index 打鼾指数;鼾声指数

1. insert casually

    e.g. She slipped in a reference to her own work

    Synonym: slip instick ininsert

2. enter surreptitiously

    e.g. He sneaked in under cover of darkness
           In this essay, the author''s personal feelings creep in

    Synonym: creep in