tranche
noun [ C ] uk/trɑːntʃ/ us/trɑːntʃ/
finance & economics specialized（金融协议，付款，金额等的）一部分
one of several parts of a financial arrangement, payment, amount, etc.
Next month, they will sell a further tranche of shares worth up to €500 million. 下个月他们将继续出售价值5亿欧元的股票。