Addition of an int and a double results in a double.
int和 doubule 类型的两个数相加，结果是一个double 类型的数。
This is a typical control system with double inputs and double outputs.
这是一个典型的双入双出的控制系统。
Double screw pump is a kind of double suction not airtight double screw pump.
双螺杆泵为一种双吸式非密闭的双螺杆泵。
One double room has a double bed and one twin room has two single beds.
一个双人间有一张双人床，一个标准间有两张单人床。
He also had a very good appetite: double portions and double deserts were not exceptional.
他也有一个很好的胃口：双部分都不例外和双沙漠。
Don't order a double burger! So simple, but so sensible. Why double the calories?
不要点双层汉堡包！原因简单但非常合理：为什么要摄入双倍卡路里呢？
METHODS: It was a randomized, double blind, double model, parallel controlled clinical trial.
方法：采用随机、双盲双模拟、平行对照方法。
Do not take a double dose of this medication. Do not double up the dose to catch up.
而就文中所介绍的药物，应当是“切勿一次服用两倍剂量”。
Do not take a double dose of this medication. Do not double up the dose to catch up.
而就文中所介绍的药物，应当是“切勿一次服用两倍剂量”。
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