1.smack v. 掴；用掌击

I don't smack them, but I sometimes think I should, because the elder two have so much attitude.
我不打他们，但有时我真觉得我该打他们，因为那两个大的非常不听管教。

I focus totally on human responses to things; if you smack someone in the face, what would they do?
我关注的完全是人类对事物的反应；如果你掴了某人一巴掌，他们会怎么办？

2.fathom n. 英寻

It is, in general, hard to fathom what he sees or thinks, which is both the point and a bit of a problem.
总之，很难参透他到底在看什么或是想什么，这既是影片的重点却也带来一点问题。

If that's tough to fathom, consider one of the features already built into the device. Say the wearer goes to the grocery store and picks up a box of cereal from the shelf.
如果这样很难彻底了解，那么请设想一下这套装置已有的一种功能——我们说如果一个使用者到食品店买东西，他从架子上挑了一盒谷类食品。

3.coil n. 线圈；卷

The burnt coil should be renewed.
烧穿的线圈应换新的。

Boil the oil soiled by the coil in the toilet lest it spoil.
把被盥洗室里的线圈弄脏的油煮开,免得它变质。

4.skiff n. 小艇；小型帆船

First we have the "Pilot of some small night-founder'd Skiff," and the pilot stands ab extra, from outside, in the simile.
首先我们有这句“迷茫深夜中，轻舟的导航人“,并且这个导航人在明喻中，体现为从诗句之外向内眺望。

All lights were out when he sailed into the little harbor and beached his skiff.
当他划进小港，让小船冲上沙滩时，岸上的灯火都已灭了。