经过反复施用除草剂，杂草得以彻底根除。With repeated applications of weedkiller, the weeds were overcome.这种除草剂在潮湿的土壤中分解.This herbicide degrades in moist soil.杂草对某些除草剂的抗药性已显现出来.Resistance of weeds to certain herbicides is beginning toshow up...
The manager tried to hearten ( up ) the players.经理设法为选手们打气.I will go first to hearten thee.我要先让你振作起来.This new clause may hearten domestic opponents of moves dictated from Brussels.这个新的条款可能让受制于欧盟的国内反对阵营振奋人心....