Lightweight , wear-resistant polymer retainers and outer sleeves reduce inertia and noise .
重量轻,耐磨损聚合物家臣和外套筒减少惯性和噪音。
The swashbuckling style of news international was rooted in an age when proprietors told politicians what to do , journalists did what they liked , and police officers were on cash retainers .
One of his retainers , named arakawa , during a visit to the temple of gion , happened to see the picture being displayed there ; and he afterwards talked about it at the palace .
他的一位名叫荒川的侍从有次参观只园神社时,碰巧看到在展示中的图画,事后他在宫殿里谈起此事。
The company 's clear aligner trays , which pop in and out like retainers , first became popular with adults as an alternative to the despised traditional metal braces .