英勇牺牲

英 = 艹 + 央 : Mnemonic symbol: a hero. An evil villain has been terrorizing the UK (英), so Maud Younger (y) and the hero (英) want to stop him. They know that he will visit engine later that day, so in front of the engine ((e)ng1) they prepare artificial lawn (艹) by adding a CPU (央) to each sheet. This way, each sheet acts as intelligent automated trap which will grab the villain once he steps on the sheet.

英 = 艹 + 央 : Mnemonic symbol: a hero. An evil villain has been terrorizing the UK (英), so Maud Younger (y) and the hero (英) want to stop him. They know that he will visit engine later that day, so in front of the engine ((e)ng1) they prepare artificial lawn (艹) by adding a CPU (央) to each sheet. This way, each sheet acts as intelligent automated trap which will grab the villain once he steps on the sheet.

勇 = 力 + 甬 : Yu the Great (yu) has to show her courage (勇) inside of the engine ((e)ng3). While standing next to a yongzhong bell (甬) she'll push its power button (力) for a dare.

牺 = 牛 + 西 : Marie Curie (xi) is selling an ox (牛) for cheap in front of the space station (Ø1) as a loss leader (牺). To pepper the ox a little up she puts a cowboy hat (西) on his head.

牲 = 牛 + 生 : The bull (牛) got a child and is watching over it in its cradle (生) in front of the engine ((e)ng1). He has to be very attentive because Sherlock Holmes (sh) wants to use the newborn as a sacrificial animal (牲).