With big knobby (多疙瘩的)tires and air-filled shockabsorbers (減震器 )，mountain bikes make easy work of even the toughest terrain¹.They help you head deeper and faster into the wilderness， sometimes accessing places easier than on foot.Here are a few things you should know before buying a mountain bike.

There are two main types of mountain bikes: full suspension ( 全懸掛型） and； hardtail （硬尾型）. Bikes with full suspension have shock absorbers on both the front and rear² for a softer， easier ride on really rough trails³.They're also the most expensive.Hardtails have suspension only on the front fork.This type is generally more durable， requires less maintenance and is a great choice for most riders.

Mountain bikes also come with either rim or disc brakes (輪圈或碟片制動(dòng)剎車).Unless you're an advanced rider，choose a bike with rim-style brakes，the most common and easiest to service. No matter what sort of bike you're looking for， here are a few tips to keep in mind:

Quality As you push the pedals⁴， it's the bike's components (gears and other moving parts) that move you down the trail.But if you buy a bike with poor-quality components， you probably won' t get very far.

Fit Someone at the shop should help you find the correct bike for your size. The most important measurement is the stand-over height. Stand over the top tube and pick the bike up. See how high you can pick it up. You should have at least a couple of inches of room，so you can hops on and off easily. It'll also make the bike more maneuver- able(操縱靈活的). Make sure the sales-man gets you fitted perfectly.And look for a bike withan adjustable-height seat so the bike can grow with you.

TestDrive Before you buy a bike，ride as many different models as you can. Do tight turns and sprint(短距離沖刺) on the bike. Try to ride up a couple of curbs⁶， too. Pay special attention to how the bike turns and shifts.

因?yàn)橛写执蟮姆阑喬ヒ约俺錃鉁p震裝置，即便是在最艱險(xiǎn)的地段山地車也能行駛自如。山地車幫助你更快地深入荒野地帶，騎上它有時(shí)候比步行更容易到達(dá)目的地?下面是——些在買山地車之前你應(yīng)該了解的事項(xiàng)。

山地車有兩種主要的類型：全懸掛型和硬尾型。全懸掛型山地車在前后都有減震裝置，這樣在崎嶇不平的路上騎起來也比較省力，這種車也最昂貴。硬尾型山地車只在前叉有懸架，這種類型的山地車更耐用，無須經(jīng)常維修，因此對(duì)于大部分人來說，是很不錯(cuò)的選擇。

山地車有輪圈制動(dòng)或碟片制動(dòng)兩種剎車方式。除非你是高手，否則最好選擇輪圈制動(dòng)。這種車最普遍也最容易維修。不管你想要哪一種車型，都需要牢記下面幾個(gè)要點(diǎn)：

質(zhì)量 當(dāng)你蹬腳踏板時(shí)，是車子的各種零部件(傳動(dòng)裝置和其他轉(zhuǎn)動(dòng)部分)幫你前行，如果買到一輛零部件質(zhì)量很差的車子，你很可能騎不了多久。

調(diào)整高度商店應(yīng)該有人幫你選擇一款適合你身高的車子。最重要的測定方法就是看看抬起高度。站在車子跟前，手抓車架上方的車把，將車子提起?？纯茨憧梢詫④囂鸲喔摺Ｗ钌賾?yīng)該有幾英寸，這樣可以方便上下車。這樣的高度也使車子更易操作。務(wù)必讓店員給你找一輛高矮合適的車子，并買一輛車座高度可以調(diào)整的車子，以便隨著你的成長，車座也可跟著調(diào)高。

試騎在買車子前，盡量多試幾款。試著急轉(zhuǎn)彎和快速騎。也試著騎上一些路牙兒，特別留意車子的轉(zhuǎn)彎和換檔。

注釋：

1.terrain n. 地區(qū)，地帶

2.rear n.后面，后部

3．trail n．小道，崎嶇小路

4.pedaln．(自行車的)踏板，腳蹬子

5.hop vi. (人)單足跳躍

6.curb n．[美](由路緣石砌成的街道或人行道的)路緣