There are also simple and safe ways to test the retina's functioning.
测试视网膜功能的方法简单而且安全。
Test in on a small area of the leather first, though, just to be on the safe side.
如果想安全起见，在一小块皮革上先试验下。
The aim of this flight was to test the new shuttle system, to go safely up into orbit and to return to the Earth for a safe landing.
这次飞行的目的是为了测试新的航天飞机系统能否安全的进入轨道和安全的返回地球着陆。
Toxicity test shows that this product is safe for human use.
毒性试验表明该产品用于人体是安全的。
It has been shown safe and reliable through practical test.
经实际运行检验，安全可靠。
It is safe to crops at the dosage of the test.
该药剂在本试验剂量范围内对作物安全。
Perfect running control and safety test device, convenient operation, safe and reliable;
完善的运行控制和安全检测装置，操作方便，安全可靠；
Equip with the pressure test safe protective device.
设有试压安全保护装置。
Equip with the pressure test safe protective device.
设有试压安全保护装置。
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