Abstract: A polymerizable phosphonate monomer and a preparation method therefor, a copolymer prepared and obtained from the polymerizable phosphonate monomer and a drilling fluid that uses the copolymer are disclosed. The anion of the polymerizable phosphonic acid (salt) has a structure that is represented in the following formula (1), and the cation is at least one among hydrogen, a monovalent metal cation, a divalent metal cation, a trivalent metal cation, and a tetravalent metal cation. In addition, 1H NMR of the polymerizable phosphonic acid (salt) substantively has no peak at the chemical shift ? of 1.019. The preparation method for a polymerizable phosphonic acid (salt) monomer as provided in the present invention uses an organic solvent as the solvent of a reaction system, so that compared to a water solvent system, reaction efficiency is higher, less by-products are produced, and the separation of the obtained products is simpler.

Abstract: A method for sharing a video clip in real time, comprising the following steps: S1: when finding an interesting clip when watching a video by a viewer, directly selecting to share the clip in a playing interface; S2: sending a request to a video sharing service system by using a current moment as an end moment by a player; S3: accepting the request sent by the player and returning a playable address including a sharing number by the video sharing service system; S4: sending a sharing request to a social platform by the player, wherein the sharing request comprises the playable address comprising the sharing number that is returned in S3; S5: processing the sharing request in step S4 while notifying a person with whom a message is shared of a message by the social platform; and S6: accessing the playable address comprising the sharing number by the person with whom a message is shared.

Abstract: A method for sharing a video clip in real time, comprising the following steps: S1: when finding an interesting clip when watching a video by a viewer, directly selecting to share the clip in a playing interface; S2: sending a request to a video sharing service system by using a current moment as an end moment by a player; S3: accepting the request sent by the player and returning a playable address including a sharing number by the video sharing service system; S4: sending a sharing request to a social platform by the player, wherein the sharing request comprises the playable address comprising the sharing number that is returned in S3; S5: processing the sharing request in step S4 while notifying a person with whom a message is shared of a message by the social platform; and S6: accessing the playable address comprising the sharing number by the person with whom a message is shared.