Point out the letters S-T-O-P. Later, you can point out an "s" on a store name and then ask if she can find some more.
写出s - T - O - P这些字母，然后可以写出s开头的商店名，问孩子是否她可以给出更多类似的。
2
O power and describes the P. T. O test bench and the procedures for determining the rated P. T. O power of Shanghai-50 Tractor.
介绍了拖拉机动力输出试验台及上海-50拖拉机动力输出轴标定功率的制订过程。
3
The ratio of the diameter and length of the lateral oviduct and seminal duct of reproductive individuals in T. ampliceps was larger than in O. formosanus (P<0.01).