1.plateholder
n.胶片夹
Plateholder is a lightproof container for a photographic plate.
2.shutter release
phr. （照相机的）快门按钮
the button on a camera that you press to make the shutter open
Look at this：fancy shutter releases，more than badass lenses， and actual 35mm film in original boxes！
看看这个，精致的快门按钮，更棒的镜头，以及原装盒子里有真正的35毫米胶片。
3.discharge
vi.vt.排出，放出；流出
when a gas or a liquor discharges or is discharged，or sb discharge it，it flows somewhere
Factory chimneys discharge smoke into the atmosphere and make it dirty.
工厂烟囱在排烟，造成大气污染。
The oil which discharges into the sea seriously harmed a lot of birds and animals.
vi.vt.发力，发电：to release force or power
Lightning is caused by clouds discharging electricity.闪电是由云层放电产生的。
n.排出（物）；放出（物）；流出（物）
Sometimes，when we're finished，our mind are as drain as an electric battery after discharge.
有时候当我们辩论完之后我们脑海里一片空白，就像是一块放完的的电池。
4.refrain
n.一再重复的话，陈词滥调
a comment or saying that is often repeated
Then，“The Yankees are coming”began to beat its refrain in her mind again.
于是“北方佬来了”这个念头又反复在她脑子里鼓噪。
vi.克制；忍住；避免
to deliberately avoid doing sth that you want to
Turn off all your cellphones，and refrain from talking.Thank you.
请关闭手机，不要交谈。感谢您的配合。
I will refrain from asking from how you know that.
n.（歌曲的）叠句，副歌部分
a short，simple part of a song，which is repeated many times
Sometimes，preoccupied with her work，she sang the refrain very low，very lingeringly.
有时她干活出了神，把叠句唱得很低沉，拖得很长。
5.spool
n.（线、电线等的）卷轴；线轴
I need a computer battery，and a spool of copper wire.
我需要一个计算机电池，还要一卷轴铜线。
I'd open it up and I'd see just a bunch of sewing needles，and spools of thread，and pin cushions.
我会把它打开，然后看到一堆绣花针何许多线轴，还有顶针。
6.spotlight
n.聚光灯
a light with a single，very bright beam that can be directed at a particular place or person
The spotlight faded. The boys disband.
聚光灯暗淡，孩子们散去了。
All you need to do is give a few speeches，wave to the crowds，and enjoy your time in the spotlight.
7.floodlight
n.泛光灯，泛光照明灯（运动场、舞台和建筑物外墙等用）
We need to install floodlights in the parking lot.
我们必须在停车场装强光灯了。
8.tripod
三脚架：a support with three legs for a camera，telescope，ect
Um，if you could set up the tripod，that would be very helpful.
Oh，look，there's the one when I left the camera running on the tripod，remember？
9.alchemy
n.炼金术
Gold. The power of alchemy.
金子。是炼金术。
Alchemy turns common metals into precious ones.
炼金术把普通金属变得有价值。
n.改变事物的神秘力量，魔力
a mysterious power or magic that can change things
She practiced her alchemy in the kitchen，turning a pile of vegetables into a delicious salad.
她像在厨房施展魔法似的，把一堆蔬菜变成了一份美味的色拉。
The company hoped for some economic alchemy that would improve business.
这家公司盼望着某种经济魔力能改善其经营状况。
10.bead
珠子，念珠
beaded 饰有珠子的
beading 念珠
beady （眼睛）珠子般的
I slipped on these stupid beads.
我踩在这些破珠子上滑倒了。
Are those prayer beads？Uh，yes， I don't go anywhere without them.
n （液体的）小珠，小滴
a small drop of liquid or moisture
There were small beads of moisture on his forehead and his fists were curled into claws as if in pain.
他的额上渗出小小的汗珠，他紧握双拳，似乎在经受某种痛苦。
draw/get a bead on sb/sth
（射击时）瞄准：to aim at sb/sth when shooting
I don't like for nobody to draw a bead on me.我也不想被人拔枪相向。
You got a bead on him. I got a tiny little window.