I'm under instructions to keep my speech short.
我接到指示讲话要简短。
Blood donation does more good than harm, so it should be encouraged under scientific instructions.
献血利大于弊，因此应该在科学指导下鼓励人们献血。
Under these instructions, they were designed to support twice the normal load.
在这种指导之下，五角大楼的地板设计值就达到了承受正常重量的两倍。
At the age of 4, she began to play ping-pong under her father's instructions.
4岁时，在父亲指导下开始打乒乓球。
If you have not installed the Web application under development, use these instructions.
如果您未安装开发中的Web应用程序，那么请遵循以下指示。
If you have already installed the Web application under development, use these instructions.
如果已经安装了开发中的Web应用程序，那么请遵循以下指示。
The workers control the machine under the operating instructions.
工人们控制这台机器在操作的指令下。
To keep comprehensive work records under the instructions and guidance of District Office staff;
依照民政事务处职员之指示，保存完备之工作纪录；
To keep comprehensive work records under the instructions and guidance of District Office staff;
依照民政事务处职员之指示，保存完备之工作纪录；
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