ready-made= available right away；not needing to be specially created or devised，现成的，预先备好的（made-to-order定制的，可以和ready-made对比记忆）
Many pieces of furniture in this shop are ready-made but you can also buy made-to-order ones.
a teaspoon of sth = 4.9 ml of sth，teaspoon作为度量单位相当于4.9毫升
The amount of natural material that should be used to make a teaspoon of dye is beyond my expectation.
rust 可作vi，生锈，也可作vt，使...生锈
You can allow iron to rust while it’s in contact with the fabric and that colors it.
wear 有服装的意思，不可数
You wear summer wear in summer and winter wear in winter unless you are either an actor or an idiot.
distinctive独特的
What’s distinctive about my wife is that she has a pair of extraordinarily big eyes.
monogamous 单配性的；性伴侣单一的；一夫一妻制的
Swans（注意an 和 want 中an 的读音一样） are believed to be monogamous.
hatch 可以作vi，表示破壳而出的意思，常见的作vt 的意思是孵化
Observers have noted that once baby sleepy lizards have hatched out of their eggs, they have hardly any contact with their parents.
fix 除了有修理的意思，还有安装的意思，也很常用，vt
We fixed gps systems onto the tails of sleepy lizards to track them.
self-preservation自我保护
Some people take avoiding marriage as a way of self-preservation as divorce would be full of pain and staying with the same partner for too many years would be even more painful.
