学无止境 Never too old to learn ; Knowledge was boundless ; live and learn ; Growing Up or Growing Old

学习无止境 So Much to Learn ; Learning a endless life

化学品环境无害管理 Environmentally sound management of Chemicals

学习永无止境 the education never ends

学习是无止境 learning is endless

美文模仿学无止境 So Much to

学习是无止境的 learning is endless