Declan

The Language Learning App Company

The Japanese word

勢力

is pronounced
seiryoku | せいりょく
means
power, might, strength, potency, force, energy
Examples:
地球側の圧政に苦しむコロニーの人々の中で、テロによる現状打破を目論む勢力が誕生。
chikyū gawa no assei ni kurushimu koronī no hitobito no naka de, tero niyoru genjō daha o mokuromu seiryoku ga tanjō.
Among the people of the colonies suffering under Earth's tyranny a force emerges intending to overthrow the status quo through terrorism.
外国勢力に加担するスパイ活動にたずさわるならば、あなたは祖国を裏切ることになる。
gaikoku seiryoku ni katan suru supai katsudō ni tazusawaru nara ba, anata wa sokoku o uragiru koto ni naru.
If you engage in espionage for a foreign power, you are selling your country down the river.
Examples sourced from tatoeba.org